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Newsgroup sci.stat.consult 21995

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Subject: Re: Probability and Wheels: Connections and Closing the Gap -- From: rhoads@sceloporus.rutgers.edu (Glenn Rhoads)
Subject: Percentage error in fit -- From: "Prof. K. Kishore"
Subject: Re: STAT-L Digest - 14 Jan 1997 -- From: G Asha
Subject: Year 2000: (was Date Format as YYMMDD?) -- From: "R. Allan Reese"
Subject: Sport Statistics Study -- From: Richard Scott
Subject: SAS Programming Jobs in PA/NJ/DE -- From: Loren King
Subject: ANOVA help -- From: Walter Brehm
Subject: SAS Clinical Jobs in PA/NJ/DE -- From: Loren King
Subject: Re: non-parametric stats textbook -- From: "David F. Cameron"
Subject: time series question -- From: David Rothman
Subject: Re: Sport Statistics Study -- From: rdadams@access4.digex.net (Dick Adams)
Subject: Re: Help with power & multiple regression -- From: karen.scheltema@state.mn.us (Karen Scheltema)
Subject: Re: PC & CCA -- From: wpilib+@pitt.edu (Richard F Ulrich)
Subject: Re: introduction to non-parametric stats -- From: j_weedon@escape.com (Jay Weedon)
Subject: Re: Comparing R^2 for different DVs? -- From: Paige Miller
Subject: Re: time series question -- From: "David P. Reilly"
Subject: Re: Ratios in regression -- From: wpilib+@pitt.edu (Richard F Ulrich)
Subject: Statistician job opening - USFWS, Maryland -- From: Clint_Moore@MAIL.FWS.GOV
Subject: Re: Best Design of Experiments software -- From: "Lori B. Pfahler"
Subject: Re: Statistical Routines for Visual Basic -- From: Clay Helberg
Subject: SmallWaters Newsletter -- From: "SMALLWATERS CORP>"
Subject: Re: 4 dim normal integral -- From: "W. Bryan Bell"
Subject: Monte Carlo studies of asymptotic approximations -- From: mglacy@lamar.ColoState.EDU (Michael Lacy)
Subject: Looking for plotting SW -- From: Thomas_HInders@crd.lotus.com (Thomas Hinders)
Subject: Re: introduction to non-parametric stats -- From: , lucz@ix.netcom.com
Subject: Re: Year 2000: (was Date Format as YYMMDD?) -- From: David Marso
Subject: Re: Power for repeated measures designs -- From: wpilib+@pitt.edu (Richard F Ulrich)
Subject: Negative confidence interval for proportion ???? -- From: tseck@gibbs.oit.unc.edu (Chiu Kit Jessica Tse)
Subject: SRCOS Research Conference (Response Surface Methods = main topic) -- From: wparr@utk.edu (Bill Parr)
Subject: Re: Year 2000: (was Date Format as YYMMDD?) -- From: John Whittington
Subject: Re: Market Research -- From: diffsimilar@wavefront.com (Kurt Salmela)

Articles

Subject: Re: Probability and Wheels: Connections and Closing the Gap
From: rhoads@sceloporus.rutgers.edu (Glenn Rhoads)
Date: 14 Jan 1997 23:24:01 -0500
bm373592@muenchen.org (Uenal Mutlu) writes:
>LOTSIM - Simulation-Program for all pick-X type Lottery Games
>[text deleted]
> Draw numbers are generated by the standard RNG, ie. the rand()
> function. Seed (srand(time)) is done once at pgmstart.
Is this in C?
You should note that the pseudo-random number generator in most
implementations of C is flawed.  C returns an unsigned integer but
the rightmost bits of the number returned are NOT RANDOM!  Suppose
C returns an integer in the range from 1 through 4,000,000,000 and
you want to convert this to a number in the range from 1 through 49.
Typically, programmers use the formula x = (n mod 49) + 1 to convert
n, the number returned by pseudo-random number generator, to the
number x of the desired range.  This is a bad thing to do in C.
This formula emphasizes the bits on the right end, namely those bits
that are not random.  To use the C's random number generator properly,
you have to first get rid of the rightmost bits.  (e.g. x >>= 8 will
get rid of the 8 rightmost bits)  If you want to do some serious
simulations with lots of samples, you really shouldn't use any
language's built-in generator and instead use a stronger generator.
-- Glenn Rhoads
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Subject: Percentage error in fit
From: "Prof. K. Kishore"
Date: Tue, 14 Jan 1997 22:20:35 +1130
Hi listmembers,
        I am a novice in statistics. I would like to link
kinematic viscosity (v) to time taken (t) for a liquid to flow
between two marks by a relationship
                v = at - b/t
where a and b are fitting parameters. Now my question is how
to calculate the error in the fit by this function. I have done
this way
        s = sqrt(sum((Y rep - Y calc)^2)/N)
        where N is the number of data points. Can I report this
parameter (s) as the error in the fit ?. Is it possible to find
percentage error in this case ?.
I thank you for your time and help
S.Kannan
kishore@hamsadvani.serc.iisc.ernet.in
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Subject: Re: STAT-L Digest - 14 Jan 1997
From: G Asha
Date: Wed, 15 Jan 1997 14:40:06 +0530
On Wed, 15 Jan 1997, Automatic digest processor wrote:
> There are 2 messages totalling 80 lines in this issue.
>
> Topics of the day:
>
>   1. introduction to non-parametric stats
>   2. Test for trend - Help!
>
> ----------------------------------------------------------------------
>
> Date:    Tue, 14 Jan 1997 16:05:06 -0700
> From:    DAN.HUSTON@ASU.EDU
> Subject: introduction to non-parametric stats
>
> Hello Folks-
>
> I am looking for an introductary book on non-parametric stats.  Any
> suggestions?
>
> Thanks-
>
> Dan Huston                                              Phone (602) 965-2420
> Measurement, Statistics and Methodological Studies      Fax   (602) 965-0300
> Psychology in Education                                   dan.huston@asu.edu
> 325 Payne Hall                           http://seamonkey.ed.asu.edu/~huston
> Arizona State University
> Tempe, AZ 85287-0611
>
> ------------------------------
>
I used to refer to a very simple, but an old book on non-parametric
analysis:
Siegel S 1956: Nonparametric statistics for the behavioural sciences.
               McGraw-Hill Book COmpany
It is very good for an introduction to Non-parametric analysis.
asha
----------------------------------------------------------------------------
G Asha
Centre for Atmospheric and Oceanic Sciences
Indian Institute of Science
Bangalore - 560 012                           e-mail: asha@cas.iisc.ernet.in
----------------------------------------------------------------------------
Return to Top
Subject: Year 2000: (was Date Format as YYMMDD?)
From: "R. Allan Reese"
Date: Wed, 15 Jan 1997 09:56:09 +0000
The year 2000 problem (aka Virginia Bottomley - that's a UK joke) -
what are various packages doing about it?
Are the "next" versions of packages going to take special steps to warn
people?  Do users anticipate problems?  Or are the problems so diverse
that there's no point in doing anything apart from reviewing your own
activities and looking for places to check on 1/Jan/2000 (once the hang-over
subsides).
I found that Stata doesn't allow YY dates.  Its function mdy delivers a
missing value for mdy(12,1,96) etc.  Demands (12,1,1996).  Stern but
sensible - the Mary Poppins package.
SPSS has so many variants on dates, but I think they all get stored as a
big number internally.  But the Reference Manual says that YY is assumed
to mean 19YY. So YRMODA(00,1,1) *is* 1/Jan/1900.  Hence your elapsed days
calculations will run backwards.
Other packages may define YY to mean "the present century".  That makes
the same problem if reading retrospective data, but if you've input data
this century and continue in 00 (2000), the accumulated data should be
alright (internally).
Dates and names are forever messy, so maybe whatever you check and plan
in the program, the most important message is to run tests and build
alerts into the data collection/management/analysis process.
PS:  this is NOT an invitation for anyone to resume a "does the 21st
century start in 2000 or 2001?" debate.
R. Allan Reese                        Email: r.a.reese@ucc.hull.ac.uk
Head of Applications                  Direct voice:   +44 1482 465296
Academic Services Computing           Voice messages: +44 1482 465685
Hull University, Hull HU6 7RX, UK.    Fax:            +44 1482 466441
Return to Top
Subject: Sport Statistics Study
From: Richard Scott
Date: Wed, 15 Jan 1997 00:17:11 -1000
Hi,
I am a senior undergraduate student here in Hawaii majoring in
Mathematics.  If I went on to a graduate school my interest would be in
studying sport (football of 2-3 codes in particular) from a statistical
viewpoint to predict team performance, player statistics, rate
performances, and provide other information.  I have seen some papers that
have looked at this in some old journals of the American Statistical
Association. I have some questions that hopefully some
people can provide some insight into or tips or pointers on where to go to
find out.
My questions are :-
1) Is this a feasible area of research?  I have been working on it in a
basic way given my own limited resources and time for the past few years.
2) Following from 1) is that at all useful, employment-wise do you think?
Are professional teams or others interested in this sort of information?
I have had an article or two published in fantasy football magazines,
which is basically all about player performance prediction, so a long-term
study such as is done in the baseball field would be interesting, I think.
3) What are the best programs?
4) What programs might have people interested in the above type of
research?  Operations Research as well, perhaps?  Other areas?
5) Anything else you might like to add to enlighten a newbie would be
great.
Thanks,
Richard
Richard Scott (rscott@hawaii.edu)
Return to Top
Subject: SAS Programming Jobs in PA/NJ/DE
From: Loren King
Date: Wed, 15 Jan 1997 09:04:46 -0800
Enjoy the flexibility of the consulting while benefiting 
from the stability of working with an industry leader.  
For the past 20 years we have been placing seasoned 
Information Technology professionals in long-term consulting 
contracts with our Fortune 500 client companies in the 
Philadelphia (PA/NJ/DE) area.  If you are a highly skilled 
SAS Programmer who wants to apply your expertise and 
develop mastery of emerging technologies while earning 
compensation commensurate with your experience, 
email your resume to:
                       balacynwyd@edpcs.com
                      Attention: Loren King
Detailed descriptions available below, or visit our website at:
         http://www1.shore.net/~field1/edp403/jobs.htm
Code:	   2239/SAS/1216
Duration:  6 Months
Position:  Senior Programmer / Analyst
Duties:	   Assist in design and writing of the system 
	   design specification and the development 
	   for the new Safety Assessment Statistical  System
Requires:  SAS, Oracle SQL and MS Office experience
Location:  Western Philadelphia Suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2238/SAS/1216
Duration:  7 Months
Position:  Senior Programmer / Analyst
Duties:	   Establish criteria for data edit & review, 
	   identify parameters in protocol, make 
	   corrections & complete consistency checks 
	   against Case Report Forms (CRF).
Requires:  Extensive SAS, Oracle, Unix 
	   and MS Office experience
Location:  Central New Jersey
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2202/SAS/1216
Duration:  6 Months
Position:  Data Analyst
Duties:	   Establish criteria for data edit & review, 
	   identify parameters in protocol, make 
	   corrections & complete consistency checks 
	   against Case Report Forms (CRF).
Requires:  Strong SAS PC skills
Location:  Wilmington, Delaware
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2115/SAS/1216
Duration:  6 Months
Position:  SAS Programmer
Duties:	   Develop Phase II & III Clinical 
	   Trials reporting applications
Requires:  SAS, VMS and Clinical Trials
Desired:   Systems background experience
Location:  Western Philadelphia Suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2080/SAS/1216
Duration:  3 Months
Position:  Programmer / Analyst
Duties:	   Perform validation and enhancements 
	   to existing clinical reports
Requires:  Strong SAS skills
Desired:   VMS experience
Location:  Northwest Philadelphia suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2072/SAS/1216
Duration:  3 Months
Position:  Programmer / Analyst
Duties:	   Perform enhancements to clinical reporting 
	   applications using SAS Base and SAS 
	   Macro on a VAX/VMS platform
Requires:  SAS and Clinical Trials experience
Location:  Northwest Philadelphia suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2046/SAS/1216
Duration:  2 Months
Position:  Technical Consultant
Duties:    PH CLINICAL software installation and support
Requires:  VMS and Clinical Trials experience.
Location:  Western Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2001/SAS/1216
Duration:  12 Months
Position:  Programmer / Analyst
Requires:  Strong BASE SAS background and a 
	   working knowledge of MS Office
Desired:   SAS Macro and AF are desired
Location:  Northwest Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1931/SAS/1216
Duration:  12 Months
Position:  Analyst
Duties:	   Support the clinical reporting 
	   teams for drug study applications
Requires:  SAS, Oracle and VMS experience
Location:  Northwest Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1900/SAS/1216
Duration:  6 Months
Position:  Programmer / Analyst
Duties:	   Work in a clinical trials environment
Requires:  SAS, IBM Mainframe and JCL experience
Location:  Northwest Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1881/SAS/1216
Duration:  6 Months
Position:  Statistician
Duties:	   Participate in the development of a Phase 
	   Three cardiovascular clinical application
Requires:  Pharmaceutical experience along with a 
	   strong statistical analysis background
Location:  Western Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1779/SAS/1216
Duration:  6 Months
Position:  Programmer / Analyst
Duties:	   Develop clinical applications under VAX/VMS
Requires:  SAS, VAX/VMS and clinical trials experience
Location:  Northwest Philadelphia suburbs
Note: 	   Excellent chance for performance based extension.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1776/SAS/1216
Duration:  6 Months
Position:  Statistician
Duties:	   Phase 2 and 3 clinical trials applications
Requires:  SAS experience
Location:  Northwest Philadelphia suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1635/SAS/1216
Duration:  6 Months
Position:  Programmer / Analyst
Duties:	   Load data from ASCII, Btrieve or 
	   MS Access files into SAS files
Requires:  SAS BASE & MACRO experience
Location:  Wilmington, Delaware
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1459/SAS/1216
Duration:  6 Months
Position:  Senior Programmer / Analyst
Duties:	   Load data from ASCII, Btrieve or 
	   MS Access files into SAS files
Requires:  Minimum of 3-4 years of SAS, clinical, 
	   pharmaceutical or related experience
Location:  Central New Jersey
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
For the past 20 years we have been placing seasoned 
Information Technology professionals in long-term 
consulting contracts with our Fortune 500 client 
companies in the Philadelphia (PA/NJ/DE) area.  In 
recognition of the value of your professional network, 
EDP Contract Services will provide a cash bonus for 
individuals who you refer that result in a successful placement. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please forward resume to:
Loren King, Technical Recruiting
EDP Contract Services
401 City Ave., Suite 915
Bala Cynwyd, PA 19004
610 667-8735 (fax)     610 667-2990 (voice)
e-mail: balacynwyd@edpcs.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
U.S. Citizenship, Green Card, F-1 or TN eligibility required
Return to Top
Subject: ANOVA help
From: Walter Brehm
Date: Wed, 15 Jan 1997 07:22:30 -0600
I am helping analyze the results of a veterinary
physiological trial and could use some help deciding how to
report the results.  The trial was held at a fully AAALAC
accredited laboratory.  After obtaining baseline
measurements for a number of physiological parameters, a
drug was administered by continuous IV infusion.  After 1
hour the measurements were repeated and the dosage was
increased.  After measurements were made at four dosage
levels of the drug there was a 1 hour washout period and the
sequence was repeated with the second drug in the trial.
There were nine subjects and a randomization table was used
to determine which drug was administered first.  The
measured parameters returned to very near original levels at
the end of the washout period. So far I have looked closely
at one parameter.  One way analyses of variance were run on
the raw measurement values and on the values expressed as a
percentage of the baseline values. One of the drugs
depressed the value while the other increased it and the
effect was dose dependent. When all concentrations ,
baseline and washout period values were included in the
ANOVA there was no statistical difference but if only the
highest concentrations, baseline and washout values were
included the p value came out around 0.02.  How can I report
these findings?  Do I need to adjust the value of  what I
consider significant?
Thank you for any guidance you can provide.
Walt Brehm                    81 Medical Operations Squadron
brehm01@kmcemh.kee.aetc.af.mil   Keesler AFB, MS
Opinions expressed here are those of the correspondent and
not the official policy of the U.S Air Force or the
Department of Defense
Return to Top
Subject: SAS Clinical Jobs in PA/NJ/DE
From: Loren King
Date: Wed, 15 Jan 1997 09:04:19 -0800
Enjoy the flexibility of the consulting while benefiting 
from the stability of working with an industry leader.  
If you are a highly skilled Information Technology 
professional utilizing Clinical SAS who wants to apply 
your expertise and master emerging technologies while 
earning compensation commensurate with your experience, 
email your resume to the attention of Loren King at:
balacynwyd@edpcs.com
Detailed descriptions available below, or visit our website at:
http://www1.shore.net/~field1/edp403/jobs.htm
Code:	   2276/SAS/114
Duration:  12 Months
Position:  Senior Programmer / Analyst
Requires:  SAS, and Clinical Trials experience
Location:  Northwest Philadelphia Suburbs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   2183/SAS/114
Duration:  4 Months
Position:  Senior Programmer / Analyst
Duties:	   Work on Phase IV and V Clinical Trials
Requires:  SAS, Clinical Trials and VAX experience
Location:  Northwest Philadelphia Suburbs
Note:	   Position will become permanent after 90 days
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1931/SAS/114
Duration:  12 Months
Position:  Analyst
Duties:	   Support the clinical reporting 
	   teams for drug study applications
Requires:  SAS, Oracle and VMS experience
Location:  Northwest Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1880/SAS/114
Duration:  6 Months
Position:  Programmer / Analyst
Duties:	   Participate in the development of a Phase 
	   Three clinical trial application
Requires:  SAS and VMS experience
Location:  Northwest Philadelphia Suburbs 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Code:	   1706/SAS/114
Duration:  6 Months
Position:  Senior Programmer / Analyst
Duties:	   Participate in the development 
	   of Clinical Trials applications
Requires:  SAS, VMS and Clinical Trials experience
Location:  Northwest Philadelphia suburbs
Note:	   Excellent chance for performance based extension. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
For the past 20 years we have been placing seasoned 
Information Technology professionals in long-term 
consulting contracts with our Fortune 500 client 
companies in the Philadelphia (PA/NJ/DE) area.  In 
recognition of the value of your professional network, 
EDP Contract Services will provide a cash bonus for 
individuals who you refer that result in a successful placement. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please forward resume to:
Loren King, Technical Recruiting
EDP Contract Services
401 City Ave., Suite 915
Bala Cynwyd, PA 19004
610 667-8735 (fax)     610 667-2990 (voice)
e-mail: balacynwyd@edpcs.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
U.S. Citizenship, Green Card, F-1 or TN eligibility required
Return to Top
Subject: Re: non-parametric stats textbook
From: "David F. Cameron"
Date: Wed, 15 Jan 1997 07:26:33 CST
Dan,
I'd recommend _nonparametric statistical methods_ by Hollander and Wolfe.
Its relatively easy reading, with good examples, and gives motivation
behind each method.
Dave Cameron
dcameron@harper.cc.il.us
Return to Top
Subject: time series question
From: David Rothman
Date: Wed, 15 Jan 1997 10:49:26 -0800
given:
1. an observed time series which is stationary according to an ADF test
2. can be reasonably fitted with a low order ar representation 
3. a limited number of initial observations ( say 100), but each day
   one obs gets added and the series will grow in length until a time
when
   the series ceases to be stationary and is then discarded (the
stationarity
   will be tested on either the whole series, or on a sliding (100 day)
   window concept - im not sure which...yet)
question:
i need a way to estimating say the 5% tails of the underlying population
of the Y's.  looking @ the tail pts of the sample doesnt do me much
good, nor does assuming normality of the dist and using a simple
variance
idea.
therefore i can :
(1) flesh out the distribution each day by simulating the ar process
with
    estimated parameters (over a 100 day moving window) and then get
    the tail pts (id rather monte carlo it than calcing sigma directly
for 
    other reasons).
or
2. bootstrap ==> given its a time series (and that its serially
correlated),
i guess i am forced to bootstrap by blocks.  this makes it a bit more
difficult.
or 
3. ???
comments?  any help wud be appreciated....thanks, dave
ps. i actually have n time series (all with a small # of obs) and need
to get a methodology robust enuf to generalize.
Return to Top
Subject: Re: Sport Statistics Study
From: rdadams@access4.digex.net (Dick Adams)
Date: 15 Jan 1997 10:49:34 -0500
Richard Scott   wrote:
> I am a senior undergraduate student here in Hawaii majoring
> in Mathematics.  If I went on to a graduate school my interest
> would be in studying sport (football of 2-3 codes in particular)
> from a statistical viewpoint to predict team performance, player
> statistics, rate performances, and provide other information. 
> I have seen some papers that have looked at this in some old
> journals of the American Statistical Association.  I have some
> questions that hopefully some people can provide some insight
> into or tips or pointers on where to go to find out. 
> My questions are :-
>
> 1) Is this a feasible area of research?  I have been working on
>    it in a basic way given my own limited resources and time for
>    the past few years.
Yes
> 2) Following from 1) is that at all useful, employment-wise do 
>    you think?  Are professional teams or others interested in
>    this sort of information?  I have had an article or two
>    published in fantasy football magazines, which is basically
>    all about player performance prediction, so a long-term study
>    such as is done in the baseball field would be interesting, I 
>    think.
Congratulations on publication!!  The interest of professional 
teams is fairly limited.  You might try surveying some teams to
see what they are doing and what their interests are.
> 3) What are the best programs?
I have no idea.  But you might see who is publishing these type
of papers in Stat journals and Sport journals and ask them.
> 4) What programs might have people interested in the above type
>    of research?  Operations Research as well, perhaps?  Other 
>    areas?
Good question to ask of people in the Sport Behavior research
business.
> 5) Anything else you might like to add to enlighten a newbie
>    would be great.
Keep publishing!!  It's good karma!!
Dick
Return to Top
Subject: Re: Help with power & multiple regression
From: karen.scheltema@state.mn.us (Karen Scheltema)
Date: Wed, 15 Jan 1997 16:04:01 GMT
Check out the Web site http://www.interchg.ubc.ca/cacb/power/
There are links to several programs which will calculate sample
size/power for you online.
On Tue, 14 Jan 1997 18:11:45 +0000, Richard Ingram
 wrote:
>Hi
>
>I'm a new member and a statistical novice - please bear with me
>
>I need to determine sample size for a multiple regression study (re:
>patient advocacy in the nursing profession), I have found tables based
>on Cohen's (Cohen, J., 1977) work, but with only a few values, but can't
>get hold of the original. I really need a formula that (a novice - well
>perhaps that's a little over-optimistic) can work with, so that I can offer a
>good justification of sample size in my ethics comittee proposal and
>ultimately  my dissertation.
>
>Any help would be very gratefully received.
>
>Richard Ingram
>r-ingram@wpg.uwe.ac.uk
>http://www.uwe.ac.uk/facults/hsc/staff/ri/r-ingram.htm
Karen Scheltema, MA MS
Statistician
State of Minnesota
Department of Human Services
Division of Performance Measurement and Quality Improvement
444 Lafayette Road
St. Paul, MN 55155-3823
(612) 296-4339         fax (612)297-1862
karen.scheltema@state.mn.us
Return to Top
Subject: Re: PC & CCA
From: wpilib+@pitt.edu (Richard F Ulrich)
Date: 15 Jan 1997 15:24:50 GMT
Pablo del Monte Luna (delmonte@cibnor.mx) wrote:
: I perform, separately, principal components technique to two groups of 
: climatic variables. Then, I made Canonical Correlation Analysis from 
: Factor Scores of each group (accounting at least 80% of the original 
: variability in any case). Is it valid?
 -- More to the point, perhaps, is, "Is it useful?"
If you used ALL of the principal components from each analysis, then
the Canonical Correlation could have been run on all the inital 
variables, and it would have accounted for the same variance.  Is
that reasonable?  "80% of the variability" is enough redundancy
that I would be cautious about  a) overfitting, if there were not a
large number of cases per variable;  or  b) correlated error, if
your data sources are not independent.
Maybe that will help you consider what you have, but your question
was not specific enough for me to say much more.
Rich Ulrich, biostatistician                wpilib+@pitt.edu
http://www.pitt.edu/~wpilib/index.html   Univ. of Pittsburgh
Return to Top
Subject: Re: introduction to non-parametric stats
From: j_weedon@escape.com (Jay Weedon)
Date: Wed, 15 Jan 1997 14:58:30 GMT
On Tue, 14 Jan 1997 16:05:06 -0700, DAN.HUSTON@ASU.EDU wrote:
>Hello Folks-
>
>I am looking for an introductary book on non-parametric stats.  Any
>suggestions?
Best loved is Siegel S., & Castellan N.J. (1988) Nonparametric
Statistics for the Behavioral Sciences. New York: McGraw-Hill. 2nd
edition. ISBN 0-07-057357-3.
Jay Weedon.
"We cannot tolerate the proliferation of this paperwork 
 any longer. It is useless to fight the forms. We must
 kill the people producing them."
          - Attributed to Vladimir Kabaidze,
            Director of the Ivanovo Machine Works
            near Moscow, in a speech before the
            annual Communist Party Congress, 1936.
Return to Top
Subject: Re: Comparing R^2 for different DVs?
From: Paige Miller
Date: Wed, 15 Jan 1997 10:42:53 -0500
Steven T Barlow wrote:
> 
> I have two regression equations.  Both use the same IVs but different
> DVs. Is there a test for significance for difference between the R^2 for
> the two equations?
> 
> Any help is greatly appreciated.
In most situations that I am familiar with, I cannot even imagine why
you would want to do such a test. I don't expect the IVs to have the
same predictive ability for different DVs. Perhaps you could provide
more details of what the 2 DVs are and why you want to know if the R^2
are the same.
And anyway, in direct answer to your question, no I don't know any
statistical test; the only answers I am aware of are based upon subject
matter knowledge -- a 50% R^2 may be great for DV 1, while a 51% R^2
might be considered poor for DV 2.
-- 
+---------------------------------+------------------------------------+
| Paige Miller, Eastman Kodak Co. | "Nyuk Nyuk Nyuk"                   |
| PaigeM@kodak.com                |                  -- Curly Howard   |
+---------------------------------+------------------------------------+
| The opinions expressed herein do not necessarily reflect the         |
| views of the Eastman Kodak Company.                                  |
+----------------------------------------------------------------------+
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Subject: Re: time series question
From: "David P. Reilly"
Date: Wed, 15 Jan 1997 14:51:14 -0500
David Rothman wrote:
> 
> given:
> 
> 1. an observed time series which is stationary according to an ADF test
> 2. can be reasonably fitted with a low order ar representation
> 3. a limited number of initial observations ( say 100), but each day
>    one obs gets added and the series will grow in length until a time
> when
>    the series ceases to be stationary and is then discarded (the
> stationarity
>    will be tested on either the whole series, or on a sliding (100 day)
>    window concept - im not sure which...yet)
> 
> question:
> i need a way to estimating say the 5% tails of the underlying population
> of the Y's.  looking @ the tail pts of the sample doesnt do me much
> good, nor does assuming normality of the dist and using a simple
> variance
> idea.
> 
> therefore i can :
> (1) flesh out the distribution each day by simulating the ar process
> with
>     estimated parameters (over a 100 day moving window) and then get
>     the tail pts (id rather monte carlo it than calcing sigma directly
> for
>     other reasons).
> 
> or
> 
> 2. bootstrap ==> given its a time series (and that its serially
> correlated),
> i guess i am forced to bootstrap by blocks.  this makes it a bit more
> difficult.
> 
> or
> 
> 3. ???
> 
> comments?  any help wud be appreciated....thanks, dave
> 
> ps. i actually have n time series (all with a small # of obs) and need
> to get a methodology robust enuf to generalize.
I am not sure that I fully understand your question/problem but some
comments are;
1. the ADF test is not robust to outliers and is marginal at best.
   A better approach is to simultaneously identify the ARMA OR ARIMA
   structure using a robust procedure ( see Masarotto ) and to then
   identify pulses , seasonal pulses, level shifts and time trends via
   the TIAO/TSAY approach.
2. Testing for model/parameter dynamics involves Threshold ARIMA methods
   and can be quite complicated. A simple approach due to CHOW is to
   test the hypothesis of a constant set of parameters.
   For more , lot's more , see
   the home page for AUTOBOX   ....... http://darkstar.icdc.com/~autobox
   for references , demos , forecasting hot links and more.
 DAVE REILLY
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Subject: Re: Ratios in regression
From: wpilib+@pitt.edu (Richard F Ulrich)
Date: 15 Jan 1997 22:51:04 GMT
ANNE KNOX (aknox@ca0330.caso.ca.blm.gov) wrote:
==>[reformated]
: I am using an abundance cover scale (Braun-Blanquet) and have taken the
midpoints of the percent cover classes (3, 15.5, 38, 63, 88).  I was
trying to examine the effect of several independant variables : on cover. 
A regression didn't work, however, since the residuals were not even close
to being normally distributed (an effect of the discrete ratios I was
told).  The best advice that I have received so : far has been to either
use Spearman's rank correlation coefficient or bootstrap analysis.  Is
that correct, and does anyone have any additional advice for me? 
<===
I have never heard of your scale, so this is might be irrelevant -
If you have a bad effect from your 'discrete ratios', maybe you should
not be making a ratio out of whatever the two numbers are....  Just
being discrete should not have a horrible effect on residuals, insofar
as symmetry, etc., is concerned.
Rich Ulrich, wpilib+@pitt.edu
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Subject: Statistician job opening - USFWS, Maryland
From: Clint_Moore@MAIL.FWS.GOV
Date: Wed, 15 Jan 1997 16:24:27 MST
  (Announcement posted on TWS-L and STAT-L list servers by Clint Moore
   for Graham Smith)
  Our office (Office of Migratory Bird Management, U.S. Fish and Wildlife
  Service, Laurel, Md.) seeks a biometrician to perform analyses in support of
  migratory bird management issues--please refer to the announcement below.
  Note that the position is open until 11 February 1997 and only to applicants
  within the federal government.  Interested parties may contact me directly, as
  I do not subscribe to the list.
  Graham Smith
  Chief, Section of Population and Habitat Assessment
  (301) 497-5860
  Graham_Smith@mail.fws.gov
  ***************************************************************************
                                   UNITED STATES
                               DEPARTMENT OF INTERIOR
                             FISH AND WILDLIFE SERVICE
                                VACANCY ANNOUNCEMENT
  POSITION: STATISTICIAN (BIOLOGY)             ANNOUNCEMENT NUMBER:  FWS9-97-11
            GS-1530-09/11/12
  OPENING DATE: JANUARY  21, 1997            FULL PERFORMANCE LEVEL: GS-1530-13
  CLOSING DATE: FEBRUARY 11, 1997        AREA OF CONSIDERATION: GOVERNMENT-WIDE
  LOCATION: ASSISTANT DIRECTOR- REFUGES AND WILDLIFE
            OFFICE OF MIGRATORY BIRD MANAGEMENT
            BRANCH OF SURVEYS AND ASSESSMENT
            POPULATION AND HABITAT ASSESSMENT SECTION
            LAUREL, MARYLAND
  Applicants who wish to handcarry their applications should deliver them to
  4040 N. Fairfax Drive, Room 308, Arlington, Virginia.
   CONTACT TELEPHONE NUMBER:      (703) 358-1743     (TTY) 358-1796
   ADDRESS OF PERSONNEL OFFICE:   FISH AND WILDLIFE SERVICE
                                  1849 C STREET, N.W.
                                  MAILSTOP: WEBB-308
                                  WASHINGTON, DC  20240
  ** APPLICANTS ARE STRONGLY ENCOURAGED TO REVIEW THE INFORMATION AND SPECIFIC
  INSTRUCTIONS CONTAINED IN OUR APPLICATION GUIDELINES DOCUMENT. **
  Our office does not accept applications by facsimile machine or by electronic
  mail.
                      **** QUALIFICATION REQUIREMENTS ****
  SPECIALIZED EXPERIENCE:  Candidates must have at least 1 year of specialized
  experience at or equivalent to the next lower grade that is directly related
  to the described duties and that has equipped the candidate with the
  particular knowledges, skills, and abilities identified to successfully
  perform the work.
   **** SPECIAL INFORMATION AND INSTRUCTIONS CONCERNING CTAP PROCEDURES ****
  Department of the Interior (DOI) Career Transition Assistance Plan (CTAP)
  procedures apply in filling this vacancy.  5 CFR 330, Career Transition
  Assistance for Surplus and Displaced Federal Employees requires the following
  order of selection for this position:
   a) At Bureau option, personnel actions listed in 5 CFR 330.606(b);
   b) Any well-qualified SSP candidate who applies within the local commuting
      area (Surplus and displaced employees will be given equal consideration);
   c) At Bureau option, personnel actions not subject to RPL;
   d) Qualified RPL candidates in the local commuting area;
   e) At Bureau discretion, any other former displaced well-qualified DOI
      employee, e.g. a well-qualified RPL candidate who applies from outside
      the local commuting area;
   f) Well-qualified ICTAP applicants in the local commuting area;
   g) Other outside applicants (other agencies, nonstatus - only if the area of
      consideration is "All Qualified Applicants".)
  AN ELIGIBLE CTAP APPLICANT IS DETERMINED TO BE WELL-QUALIFIED IF HE/SHE MEETS
  THE FOLLOWING:  OPM QUALIFICATION STANDARDS FOR THE POSITION; ALL SELECTIVE
  FACTORS, WHERE APPLICABLE; SPECIAL QUALIFYING CONDITIONS THAT OPM HAS
  APPROVED FOR THE POSITION; IS PHYSICALLY QUALIFIED WITH REASONABLE
  ACCOMMODATION, WHERE APPROPRIATE, TO SATISFACTORILY PERFORM THE DUTIES OF
  THE POSITION UPON ENTRY; AND IS RATED BY THE ORGANIZATION AT AT LEAST THE
  MIDDLE LEVEL OF A 3-LEVEL RATING SYSTEM ON ALL QUALITY RANKING FACTORS.
  STATEMENT OF DUTIES:
  This position is located in the Population and Habitat Assessment Section,
  Branch of Surveys and Assessment, Office of Migratory Bird Management located
  at Laurel, Maryland.  The Section is the Office's principal organizational
  unit assigned the task of assessing population status of migratory game bird
  populations and recommending appropriate harvest management regulations.  The
  incumbent serves as a statistical staff specialist and applies statistical
  theory and methods to the solution of analytical problems associated with the
  management of birds.  The incumbent (1) evaluates proposed management actions
  to ensure that they follow from statistically valid inferences; (2) conducts
  statistical analyses of survey and banding data on migratory birds; (3)
  evaluates and upgrades analytical procedures of population, habitat, and
  harvest surveys; (4) designs quantitative studies of special migratory bird
  problems; and (5) provides other Section, Branch and Office staff with
  statistical support and advice.
  KNOWLEDGES, ABILITIES, SKILLS AND OTHER CHARACTERISTICS (KASOCS):
   1. Knowledge of theories, principles, and methods of applied statistics.
   2. Knowledge of decision sciences with emphasis on stochastic processes,
      dynamic optimization and simulation modeling.
   3. Knowledge of the quantitative methods associated with the study and
      management of wildlife populations.
   4. Knowledge of survey design and sampling theory and methods.
   5. Ability to communicate effectively and work well with others.
   6. Knowledge of data warehousing and skill in the use of a statistical
      software package.
   ** DISPLACED EMPLOYEES REQUESTING SPECIAL CONSIDERATION UNDER THE ICTAP **
  If you are a displaced Federal employee you may be entitled to receive
  special selection priority under the ICTAP.  To receive this priority
  consideration you must:
  1. Be a displaced Federal employee. You MUST submit a copy of the appropriate
     documentation showing your priority consideration status with your
     application package.  The following categories of candidates are
     considered displaced employees:
     A. Current or former career or career-conditional (tenure group I or II)
        competitive service employees who:
        (1) received a specific RIF separation notice (include a copy of your
            RIF notice or your Standard Form 50 stating you were separated by
            RIF); or
        (2) were separated because of a compensable injury, whose compensation
            has been terminated, and whose former agency certifies that it is
            unable to place them; or
        (3) retired with a disability and whose disability annuity has been or
            is being terminated; or
        (4) upon receipt of a RIF separation notice retired on the effective
            date of the RIF; or
        (5) retired under the discontinued service retirement option; or
        (6) were separated because you declined a transfer of function or
            directed reassignment to another commuting area.
                                      OR
     B. A former Military Reserve or National Guard Technician who is receiving
        a special Office of Personnel Management (OPM) disability retirement
        annuity under section 8337(h) or 8456 of title 5 United States Code.
        Include a copy of your eligibility letter from the National Guard or
        Military Reserve.
  2. Be applying for a position at or below the grade level of the position
     from which you have been separated.  The position must not have a greater
     promotion potential than the position from which you were separated.
  3. Have a current (or last) performance rating of record of at least fully
     successful, results achieved, or equivalent.  A copy of this performance
     rating MUST be submitted with your application package. (This requirement
     does not apply to candidates who are eligible due to compensable injury or
     disability retirement).
  4. Occupy or be displaced from a position in the same local commuting area as
     the position for which you are requesting priority consideration.
  5. File your application by the vacancy announcement closing date and meet
     all the application criteria (eg., submit all required documentation,
     etc.)
  6. Be rated well-qualified for the position.  An eligible ICTAP applicant is
     determined to be well-qualified if he/she meets the following:  OPM
     qualification standards for the position; is physically qualified with
     reasonable accommodation, where appropriate, to satisfactorily perform the
     duties of the position upon entry; and is rated by the organization at at
     least the middle level of a 3-level rating system on all quality ranking
     factors.
Return to Top
Subject: Re: Best Design of Experiments software
From: "Lori B. Pfahler"
Date: Wed, 15 Jan 1997 15:48:43 -0500
You might give Design-Ease or Design-Expert a try.  They are both 
products of Stat-Ease 612-378-9449.  We use this software with our
Chemists and Chemical Engineers.  We found it to be one of best for DOE.
web site at www.statease.com
-- 
Lori B. Pfahler                           Lori_B_Pfahler@rohmhaas.com
Rohm and Haas Company                                    215-619-5480
These are my opinions, not those of the Rohm and Haas Company
Return to Top
Subject: Re: Statistical Routines for Visual Basic
From: Clay Helberg
Date: Wed, 15 Jan 1997 09:33:28 -0600
Tim Dierauf wrote:
> 
> Greetings Group,
> 
> I am working with a company that is attempting to trend compressor
> degradation with software using linear regression and Windows-95.   The
> application is written in visual basic.  I would like to get them to use
> some more robust diagnostics such as deleted residuals and/or Cook's
> Distances along with an F-test to determine model strength.
> I can write these routines for them, but would rather use a commercial
> debugged package.  Does anybody know if there are any packages available
> in DLL or Visual Basic callable forms that provide statistical
> distributions such as the Normal, F, and Student-t?  Better yet,
> regression analysis and diagnostics?
> 
> Thanks in advance,
> Tim
(Disclaimer: I work for SPSS, so my opinions may be biased....)
Tim--
I agree with you that a commercial package is the way to go--by the time
you write your own code for the thing, the time you've spent on it will
have cost the company far more than the cost of the commercial package.
As for interfacing with VB, consider SPSS 7.5 for Windows. It provides
OLE object links to most of the SPSS's features, and allows you to open
SPSS data files, manipulate them, call statistical procedures, generate
graphs and plots, and access the results, all from your VB (or C++, or
Powerbuilder, or whatever) application. We will soon be releasing a book
for developers filled with examples of VB, C++ and Powerbuilder code for
building custom applications which access the procedures and features in
SPSS.
For more information, see .
						--Clay
--
Clay Helberg         | Internet: helberg@execpc.com
Publications Dept.   | WWW: http://www.execpc.com/~helberg/
SPSS, Inc.           | Speaking only for myself....
Return to Top
Subject: SmallWaters Newsletter
From: "SMALLWATERS CORP>"
Date: Wed, 15 Jan 1997 16:44:37 -0600
                     SmallWaters Newsletter
                        January 15, 1996
This E-mail newsletter contains certain news about Amos, SmallWaters
Corporation and upcoming SEM workshops.
1.  Telephone area code change
    --------------------------
    SmallWaters' telephone area code has changed from 312 to 773,
    effective immediately. Our new numbers are
        voice:  USA-(773)-667-8635
        fax:    USA-(773)-955-6252
    "Please make a note of it."
2.  Free Amos 3.6 student version
    -----------------------------
    New: The  Amos 3.6 student version is located on the
    SmallWaters web page from where it can be downloaded.
    It is available at no charge, and users are permitted
    to copy and share it freely.
    The Amos 3.6 student version runs all 21 examples of the
    Amos Users' Guide. The program is identical to the full
    commercial version except that there are some restrictions
    on the size of the model (up to eight observed variables
    and 54 free parameters). A 23-page tutorial (postscript
    file) and full online help make it easy to get started.
    For specific information, point your web browser to
        http://www.smallwaters.com/amos/student.html
    Installation instructions for the usual Windows system
    dialects, i.e., Windows 3.1x, Windows 95, Windows NT 3.51
    and 4.0x, and IBM OS/2 Warp 3 (with WIN-OS/2) are also
    on the web page.
3.  Free Amos path diagram viewer
    -----------------------------
    Last summer, a discussion thread on SEMNET called for
    tools that would make it easier to exchange path diagrams
    via E-mail. In response to these suggestions, Jim Arbuckle
    designed the Amos 3.6 student version so that it would
    read and print *ANY* Amos path diagram (*.amw) file, no
    matter how many variables it contained.
    With the diagram viewer, Amos path diagrams produced
    elsewhere can be viewed and printed locally in publication
    quality. The appearance of the path diagram can be edited,
    i.e., objects can be moved and resized, typefaces changed
    etc. However, if the diagram has more than 8 observed
    variables, the model structure can no longer be changed,
    neither can the parameter or variable labels.
    With the Amos path diagram viewer, *.amw files can now be
    delivered as mail attachments or web objects. The recipient
    of the diagrams no longer has to purchase an Amos license
    to merely see the diagram. Instead, he/she can simply
    download and install the free Amos student version.
    Note: The Amos student version can be configured as a
    helper application or "plugin" for web browsers and mail
    viewers (specify that the browser should launch the application
    "amosgraf.exe" to read files with "amw" extensions). I have
    tested Amos as a plugin to Netscape 2.02 and it works
    pretty smoothly.
4.  Upcoming SEM workshops in Heidelberg and Chicago
    ------------------------------------------------
    March 1-7: Three separate SEM workshops given in
    Heidelberg (Germany) by
    o   Karl Joereskog and Fan Yang
    o   James L. Arbuckle and Werner Wothke
    o   Peter M. Bentler
    March 24-28: Four SEM workshops given in Chicago
    by
    o   Ralph Mueller
    o   Werner Wothke
    o   Jamal Abedi
    o   James R. Campbell and John Keeves
    Costs for these workshops are very affordable (in the $15-120
    reange). Specifics can be found at
        http://www.smallwaters.com/courses
5.  New Amos site licensing
    -----------------------
    An Amos site licensing option is now available for
    universities and other organizations.  Pricing details are
    given on
        http://www.smallwaters.com/sales
6.  Help wanted
    -----------
    SmallWaters is looking for a full-time MARKETING and SALES
    assistant. If you know of qualified persons in the Chicago
    area who are looking for for a new position, please point
    them to the announcement on
        http://www.smallwaters.com/humres
Yours very truly,
Werner Wothke
***************************************************************
*                                                             *
*  SmallWaters Corporation     voice: USA-773.667.8635        *
*  1507 E. 53rd Street, # 452    fax: USA-773.955.6252        *
*  Chicago, IL 60615           Email: wewo@smallwaters.com    *
*                                                             *
*       Web page --- http://www.smallwaters.com               *
***************************************************************
Return to Top
Subject: Re: 4 dim normal integral
From: "W. Bryan Bell"
Date: Wed, 15 Jan 1997 14:42:34 -0600
Ziegler Andreas Dr. wrote:
> 
> Hai,
> I am looking for a precise algorithm for computing the cumulative distribution
> function of a four dimensional normal distribution. One approach could be
> Gaussian Quadrature for one dimension and a three dimensional distribution
> function for the other.
> (Simulation methods are not precise enough.)
> Any help would be appreciated.
> Andreas
I have s similar problem. I am trying to integrate a 4 dimensional
Gaussian
accurately out into the tails. It was suggested to me by Peter Spellucci
to
look at Gauss-Hermite Quadrature integration. Wonderful direction of
thought!
This could work if I could get the integration to map into the proper
form.
I am continuing to work on this problem. I am currently 'Brute-forcing
it'
to produce intermediate results. Please keep me informed.
Bryan Bell
bellwb@lmtas.lmco.com
Return to Top
Subject: Monte Carlo studies of asymptotic approximations
From: mglacy@lamar.ColoState.EDU (Michael Lacy)
Date: 15 Jan 1997 14:36:58 -0700
I'm looking for leads to some typical reports of Monte Carlo
studies of the adequacy of asymptotic approximations fo
sampling distributions.  These could either be studies of
confidence interval coverage, or of hypothesis tests.
For example, if someone could point me to simulation 
studies of the performance of LLR tests in log-linear
models, or of CIs on the coefficient estimates in
a logistic regression mdoel, these would be most useful.
I realize the woods must be full of such studies, but I'm not having
much luck turning them up.  I'm interested in these to get a sense
of how good an asymptotic approximation needs to be for people
to think of it as acceptable. (I want to compare some of my
own results.)  The only reason I singled out logistic models
was that they are commonly used by the audience (social scientists)
for whom I am writing.
Thanks,
-- 
=-=-=-=-=-=-=-=-=-==-=-=-=
Mike Lacy, Sociology Dept., Colo. State Univ. FT COLLINS CO 80523
voice (970) 491-6721        fax   (970) 491-2191
Return to Top
Subject: Looking for plotting SW
From: Thomas_HInders@crd.lotus.com (Thomas Hinders)
Date: 15 Jan 1997 23:26:58 GMT
A Doctor friend of mine is recording patient family information with regards 
to the occurrence of cancer in family groups.  Currently he records the 
information and then plots it on paper using symbols to reflect male and 
female and annotating the symbols with lines, or other marks, to indicate that 
cancer was present, cured or if death was attributed to the cancer.
Makes for a VERY effective visual display of  the information, and is much 
easier for to see the effect of family (i.e. genetics) on cancer in a family.
The Doctor is recording the information on paper, using a template of sorts to 
draw the symbols, and he has asked me to look into the availability of  
programs (Win31/95 based) that would allow him to enter the information from 
his PC and create a family chart, both on screen (probably pretty easy) and 
print-out on a laser quality printer (probably NOT so easy).
He is happy to use whatever symbols the program provides,or to create his own 
and use them within the program.
Does anyone in this group have any suggestion....most of the family tree type 
programs are for more typical "who was my great great grandfather" and not esp 
suited to this type of information recording.
Please reply directly to my email address, our news server unstable.
Thanks in advance......................
Tom Hinders & Dr. George Gowen
Thomas_Hinders@lotus.com
Return to Top
Subject: Re: introduction to non-parametric stats
From: , lucz@ix.netcom.com
Date: Wed, 15 Jan 1997 18:36:53 -0500
DAN.HUSTON@ASU.EDU wrote:
> 
> Hello Folks-
> 
> I am looking for an introductary book on non-parametric stats.  Any
> suggestions?
> 
> Thanks-
> 
> Dan Huston                                              Phone (602) 965-2420
> Measurement, Statistics and Methodological Studies      Fax   (602) 965-0300
> Psychology in Education                                   dan.huston@asu.edu
> 325 Payne Hall                           http://seamonkey.ed.asu.edu/~huston
> Arizona State University
> Tempe, AZ 85287-0611
I found the book by W.J. CONOVER,  "APPLIED NONPARAMETRICS STATISTICS"
John Wiley & Sons, very useful.
Luke
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Subject: Re: Year 2000: (was Date Format as YYMMDD?)
From: David Marso
Date: Wed, 15 Jan 1997 18:42:05 -0600
Alan Reese Wrote (in part):
"SPSS has so many variants on dates, but I think they all get stored as
a
big number internally.  But the Reference Manual says that YY is assumed
to mean 19YY. So YRMODA(00,1,1) *is* 1/Jan/1900.  Hence your elapsed
days
calculations will run backwards."
They are all stored (except for YRMODA) as seconds since midnight Oct
14,1582.
YRMODA is stored as Days since this same date (not arbitrary) the
beginning of
the Gregorian Calender .  A simple solution is USE 4 digit year values
or protect 
your code with something like the following (In this case all 2 digit
years less 
than 20 will be treated as 20YY instead of 19YY .   I provide a
demonstration of
the approach:  
Regards, David Marso
SPSS Technical Support Representative 
DATA LIST / M D Y 1-6 DATE 8-17 (ADATE) YR4 19-22.
begin data
010100 01/01/2000 2000
end data .
list.
COMPUTE YRMODAA=YRMODA(Y,M,D).
COMPUTE YRMODAB=YRMODA((Y+(Y<20))*2000,M,D).
COMPUTE YRMODA4=YRMODA(YR4,M,D).
*Better *:.
COMPUTE DATEVARA=DATE.MDY(M,D,Y).
COMPUTE DATEVARB=DATE.MDY(M,D,+(Y<20)*2000).
COMPUTE DATEVAR4=DATE.MDY(M,D,YR4).
COMPUTE CHECKA=YRMODAA*86400.
COMPUTE CHECKB=YRMODAB*86400.
COMPUTE CHECKC=YRMODA4*86400.
FORMATS DATEVARA DATEVARB DATEVAR4 CHECKA CHECKB CHECKC (ADATE).
LIST.
 M  D  Y       DATE  YR4  YRMODAA  YRMODAB  YRMODA4   DATEVARA  
DATEVARB   DATEVAR4     CHECKA     CHECKB     CHECKC
 1  1  0 01/01/2000 2000 115861.0 152385.0 152385.0 01/01/1900
01/01/2000 01/01/2000 01/01/1900 01/01/2000 01/01/2000
Number of cases read:  1    Number of cases listed:  1
Return to Top
Subject: Re: Power for repeated measures designs
From: wpilib+@pitt.edu (Richard F Ulrich)
Date: 15 Jan 1997 22:59:24 GMT
Bruce L. Lambert, Ph.D. (lambertb@uic.edu) wrote:
: Hi everyone,
: I am planning some memory experiments that will use repeated measures
: (a.k.a., within subjects) designs. However, I do not know how to estimate
: sample sizes for these designs. Cohen's text has no index entry for
: "repeated measures" or "within subjects" and the chapter on ANOVA does
: not give much guidance on the issue as far as I can tell. Most published
: studies I've read in reviewing the short-term memory literature use quite
: small sample sizes (< 40), but each participant produces many dozens,
: even hundreds of data points, due to repeated trials. Can someone give me
: pointers in this area?
As someone else suggested, you easiest answer might be do reduce your
consideration to a paired t-test;  if you can.
To actually set up your pre-suppositions for any intricate  repeated
measures design, I think you need some good, expert, hands-on advice,
and/or a good set of pilot data.  (The conventions of the way SS and
effect sizes are described in Repeated Measures are different from 
what you might expect from looking at other ANOVA...)
Rich Ulrich, biostatistician                wpilib+@pitt.edu
http://www.pitt.edu/~wpilib/index.html   Univ. of Pittsburgh
Return to Top
Subject: Negative confidence interval for proportion ????
From: tseck@gibbs.oit.unc.edu (Chiu Kit Jessica Tse)
Date: 15 Jan 1997 22:32:41 GMT
I calculated the weighted proportion and standard error
of a rare factor.
I got the proportion as 0.0175 and
      the standard error as 0.011895.
The corresponding 95% Confidence Interval is
   -0.0058, 0.0408
How do I explain the negative lower C.I.?
I know my math is correct.   
Could someone please help me understand this.
Thanks a lot.

Return to Top
Subject: SRCOS Research Conference (Response Surface Methods = main topic)
From: wparr@utk.edu (Bill Parr)
Date: Wed, 15 Jan 1997 21:09:08 -0500
Some of you commented that many folks don't have WWW access, even though
they have USENET access, so:
Here's the material which appears on the WWW page on the June 19 - 21
Gatlinburg SRCOS meeting.
Sorry about the repeated mailing for some of you.
Bill Parr
========================
Brief fact sheet on the SRCOS meeting June
                               19 - 21, 1997
                        Last updated 1/14/97
This meeting will have a strong emphasis on Response Surface Methods, with
an impressive array of distinguished speakers (see below) alreay assembled.
There will be an opportunity for poster sessions for those interested.
Ph.D. students are especially encouraged to attend.
For the best and most up-to-date information on this conference, visit and
bookmark the conference home page
at:
http://funnelweb.utcc.utk.edu/~wparr/srcos.html
Direct all inquiries to Bill Parr (wparr@utk.edu, 423-974-1631) or Gina
Keeling (gkeeling@utk.edu, 423-974-2558)
Dates: June 19 - 21, 1997. Most people will drive/fly in Wednesday
afternoon or night June 18, and depart sometime Sunday June 22. Ground
transportation from the airport to Gatlinburg takes about 70 minutes. Cost
is about $50 each way by cab (on average).
BLOCK THIS ON YOUR CALENDAR NOW, AND PUT IT IN YOUR BUDGET!!!
Airport: The local airport (for other than private planes) is McGhee -
Tyson, in Knoxvile, Tennessee.
Hotel: Park Vista, Gatlinburg, Tennessee, $70.00 per night. The hotel is
nestled in beautiful Gatlinburg, Tennessee, with easy access to the
National Park, to shopping for art and antiques, and to the Pigeon Forge
outlet malls.
We have reserved a block of 60 rooms.
Children under 18 stay for free. Hotel rooms come with one king-size or two
double beds. Rollaway beds can be rented for $10.00 per night. Cribs are
free. You must indicate your preference when making your reservations.
Complimentary coffee and doughnuts are served in the lobby each morning.
For meeting paticipants, coffee, juice, pastries, bagels and muffins will
be served during the morning sessions. Coffee, sodas and snacks will be
served during the afternoon sessions. You are on your own for meals other
than the banquet Friday night. The restaurant serves a breakfast buffet, or
you can eat breakfast and lunch from the menu (neither is included in the
room price).
Check out time is 11:00 a.m., check-in time is 4:00 p.m.
Cancellations must be made 72 hours prior to the arrival date to qualify
for a refund.
Contact phone number for the Park Vista: 1-800-227-5622 or 1-423-436-9211
Tentative program plan (subject to change) -
                        Last updated 1/14/97
June 18 (Wednesday)
6:00 p.m. - 7:00 p.m. Reception in Garden View C & D at the Park Vista
All the sessions below will be in the Tennessee Ballroom.
June 19, Session 1 (Morning, 9 - 12)
Keynote speaker: Ray Myers, Virginia Tech (Chair for Keynote session: David
Sylwester, University of Tennessee)
Session organizer: Geoff Vining, University of Florida
       Christine Anderson-Cook - Virginia Tech
       Richard Lynch - Harris Semiconductor - A Case study using RSM to
improve quality of a semiconductor process
       Geoff Vining, University of Florida
June 19, Session 2 (Night, 7 p.m.- 9:30 p.m.):
Statistical Education
Session Organizer - Richard Scheaffer, University of Florida
       Richard Scheaffer - University of Florida
       Madhuri Mulekar - University of South Alabama
June 20, Session 1 (Morning, 9 - 12)
Keynote speaker: John Cornell, University of Florida (Chair for keynote:
Darryl Downing, Oak Ridge)
Session organizer: Andre Khuri, University of Florida (on multi-response
problem)
       Andre' Khuri, Univ. of Florida
       James W. Neil, Kansas State Univ.
       Warren E. Stewart, Univ. of Wisconsin-Madison
June 20, Session 2, (Afternoon, 2 - 5)
Session on Neural Networks and Linear Models
Session Organizer: Todd Ogden, University of South Carolina
       Matt Rotelli, Eli Lilly & Company
       Other speakers TBD
6:30 - 8:30 p.m. Mountain Hoedown Banquet - Outside on the lawn, or, in the
event of rain, in Garden View C, D, and E
June 21, Session 1 (Morning, 9 - 12)
Keynote speaker: G.E.P. Box (Chair for keynote: Joanne Wendelberger, Los
Alamos)
Session organizer: Dennis Lin, Penn State University (Chair: Greg Piepel,
Battelle Laboratories)
       Max Morris, Oak Ridge
       Robert Mee, University of Tennessee
       Kwang-Jae Kim, Pennsylvania State University
June 21, Session 2 (afternoon, 1 - 4:00)
Session on Information Theoretic Modeling
Session Organizer: Hamparsum Bozdogan, University of Tennessee
Session Chair: Refik Soyer, George Washington University
       Hamparsum Bozdogan, University of Tennessee - "A New Informational
Complexity Criterion for Model Selection: The General THeory and Its
Appications"
       Chen Xi, Pfizer, Inc. - "Model Selection in nonlinear Regression
Analysis"
       Peter M. Bearse & Hamparsum Bozdogan, University of Tennessee -
"Selecting the Model Order, Lag Length, and the Best Predictors in Vector
Autoregressive (VAR) Models using the Informational Complexity Criterion"
       Discussant: Refik Soyer, George Washington University
Registration information can be found at
http://funnelweb.utcc.utk.edu/~wparr/srcos.html
or by calling Gina Keeling at 423-974-2558.
==================================================================
  William C. Parr          Phone: 423-974-1631, Fax: 423-974-2490
  Email: wparr@utk.edu
  mailto:wparr@utk.edu
  World Wide Web:  http://funnelweb.utcc.utk.edu/~wparr/
 "And the ship's wise men
  will remind you once again
  That the whole wide world is watchin'."     Bob Dylan
==================================================================
-- 
William C. Parr
wparr@utk.edu
URL: http://funnelweb.utcc.utk.edu/~wparr/
Phone: 423-974-1631     Fax: 423-974-2490
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Subject: Re: Year 2000: (was Date Format as YYMMDD?)
From: John Whittington
Date: Thu, 16 Jan 1997 02:29:00 +0000
On Wed, 15 Jan 1997, "R. Allan Reese"  wrote (in
part):
>The year 2000 problem (aka Virginia Bottomley - that's a UK joke) -
>what are various packages doing about it?
As for 'packages', I use SAS most of the time and that has been addressing
the problem for some time.  There has always been a user-settable option to
define 'year cutoff' when it comes to interpretting YY dates (e.g. if one
sets this cutoff as 1930, then '31' is interpreted as 1931, but 29 is
interpreted as 2029) and we are assured that all current releases of SAS can
cope with dates up to around the year 20,000!  Furthermore, the very wide
range of 'informats' available in SAS permit the correct reading in of dates
in virtually any non-ambiguous format.
The more serious problem, however, relates to operating systems,
particularly for PCs.  I gather that most versions of MS-DOS out there and,
worse, very many BIOSs will crash whilst everyone else is having celebratory
drinks, and simply will not work with a year of '00' - and I suspect the
same is true of many other operating systems.  One hopes and imagines that
any new software released from now on will be addressing the problem - but
there is probably going to be mayhem for those who, at midnight on 31
December 1999, have software dating from much earlier than the mid 90s.
Regards,
John
-----------------------------------------------------------
Dr John Whittington,        Voice:      +44 1296 730225
Mediscience Services        Fax:        +44 1296 738893
Twyford Manor, Twyford,     E-mail:     johnw@mag-net.co.uk
Buckingham  MK18 4EL, UK    CompuServe: 100517,3677
-----------------------------------------------------------
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Subject: Re: Market Research
From: diffsimilar@wavefront.com (Kurt Salmela)
Date: 16 Jan 1997 04:11:53 GMT
What you want to do with the software is pretty vague in
your note as are the capabilities of the people who will
use the software.  For non-statistical end-users, you will
be constrained the most by ease-of-use.  Do you envision
these people creating cross-tabulations or bar charts?
You may need a custom application developed so it is
like a decision-support system or EIS (executive information
system).
-- 
Kurt Salmela              .--------------------------.
DiffSimilar Analytics    | Marketing Data Analysis,   |
3399 Kent Street #310  
Shoreview, MN 55126-4086  '--------------------------'
USA
http://www.wavefront.com/~diffsimilar
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