Re: GEE Repeated Measures

2001-12-19 Thread Warren
reviewers comment was something like Why on earth would anyone want to use GEE's for such a simple design. Hmm. Warren [EMAIL PROTECTED] (SR Millis) wrote in message news:[EMAIL PROTECTED]... In November's issue of the American Statistician, Yang Tsiatis discuss the use of generalized

Re: chi square validity?

2001-12-19 Thread Warren
a Bonferroni approach would work okay here. There are various methods of computing the intervals, but I would suggest a Wilson-type interval. (For a discussion, see the 2000 issue of the Journal of Statistical Software that discusses setting CI's for the multinomial) Warren May [EMAIL PROTECTED

Re: for students (biology et al.) that hate numbers

2001-10-17 Thread Warren
I don't feel MM's are any more trivial to introduce the concepts than the usual chips in an urn or balls from a jar. And I don't agree that using MMs is trivial or juvenile. My class has basic science grad students, M.D.s, Health professionals of all types and they do seem to get something from

What is a confidence interval?

2001-09-26 Thread Warren
you explain? Thanks, Warren = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =

Re: How estimate p to Bernoulli Trial?

2001-09-06 Thread Warren
Rafael, Is this homeworks? You're on the right track...you either need a separate guess for the probability of success or you need an estimate from a sample. Is there an even chance of turning right or left? Are you a classicist, a frequentist or a subjectivist? :) Warren [EMAIL PROTECTED

Re: Teaching Intro Biostat using Daniel's book

2001-08-30 Thread Warren
I'm using Daniel's book too. I've used it for the last couple of years, switching from Glantz Primer. The 7th edition still has quite a few errors, but I like it for some of the exercises. Would love to be on your mailing list. Warren [EMAIL PROTECTED] (Robert Hamer) wrote in message news

Re: errors in journal articles

2001-05-03 Thread Warren Sarle
since 1950, the number of American children gunned down has doubled. This quotation is my nomination for a dubious distinction: I think it may be the worst -- that is, the most inaccurate -- social statistic ever. Full text: http://chronicle.com/free/v47/i34/34b00701.htm -- Warren S. Sarle

Re: Conjoint analysis: orthogonal array

2001-03-26 Thread Warren F. Kuhfeld
do? | | Thanks in advance, | Irina. | -- Warren F. KuhfeldSAS Institute Inc. (919) 677-8000 x17922 Multivariate Models RD Cary, NC 27513-2414 (919) 677- (Fax) R5116 SAS Campus Dr. www.sas.com The power to know Opinions expressed here are mine and not necessarily those

Re: Levels of measurement.

2001-02-10 Thread Warren Sarle
than a thousand dollar increase at the high end of the scale. See the discussion of log-interval scales in ftp://ftp.sas.com/pub/neural/measurement.html -- Warren S. Sarle SAS Institute Inc. The opinions expressed here [EMAIL PROTECTED]SAS Campus Drive are mine

Re: election

2000-11-16 Thread Warren Sarle
%. And since the margin could be either +0.5% or -0.5%, disputes would happen roughly twice as often. -- Warren S. Sarle SAS Institute Inc. The opinions expressed here [EMAIL PROTECTED]SAS Campus Drive are mine and not necessarily (919) 677-8000Cary, NC 27513, USA those

Re: NY Times on statisticians' view of election

2000-11-12 Thread Warren Sarle
development and operation. And the desire for voter privacy is fundamentally in conflict with any requirements for accountability (e.g., audit trails). In the Florida case, we still have to wait for the absentee ballots, and any possible further recounts in other states. -- Warren S. Sarle

Re: testing if classifier accuracy differs significantly

2000-08-20 Thread Warren Sarle
. If you did McNemar's test on pixels, it would not be valid due to spatial correlation. Follow-ups set to sci.stat.consult -- Warren S. Sarle SAS Institute Inc. The opinions expressed here [EMAIL PROTECTED]SAS Campus Drive are mine and not necessarily (919) 677-8000Cary

Re: Recommendation for Statistics Software?

2000-06-30 Thread Warren
have demos that you might check. SPSS sent me a really nice SYSTAT CD with a bunch of other Jandelly looking software like SigmaStat, etc. SPSS also has a grad pack for a great price if you are a student. NCSS has a free download that includes PASS. Warren May

Re: Statistical Libraries

2000-05-17 Thread Warren
remember correctly. I think it might be like the old IMSL library...you can't run the code without having ENTISOFT. Bummer. www.entisoft.com Luck, Warren Clay Fink wrote: I am reverse engineering a piece of software that was implemented in SAS. It uses the BETAINV function to compute the upper

Re: which calculator for statistics?

2000-05-15 Thread Warren
to a computer with some REAL software is the way to go. The $300 US you pay for a calculator will go a long way on software (SPSS had a grad pack that was an awesome deal...hope they still have it). Warren May Donald Macnaughton wrote: Stefanie Dzierzon writes (on 00/5/13) I am studying

Re: no correlation assumption among X's in MLR

2000-05-04 Thread Warren Sarle
In article 002501bfb563$e8e6e8e0$[EMAIL PROTECTED], [EMAIL PROTECTED] (David A. Heiser) wrote: - Original Message - From: Herman Rubin [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 03, 2000 8:20 AM Subject: Re: no correlation assumption among X's in MLR In

Re: Sample calculations? :)

2000-03-28 Thread Warren
for subject specialists. Also, if I remember correctly you want to use 2 alpha instead of alpha for constructing the CI. Warren. Rich Ulrich wrote: (posted to sci.stat.consult,sci.stat.edu, where version of the same post by Wang appeared.) On Tue, 28 Mar 2000 15:51:47 +0800, Ng Tsz Wang

Re: over and above

2000-03-23 Thread Warren
e form of multimedia...slides, overheads, etc. Afterwards, we open the floor for discussion focusing on the statistical methods and results. Lots of great opportunities (and sometimes exam questions) come from these discussions. Anxious to hear how others feel about projects. Warren dennis robe

Re: Calculator policy

2000-03-23 Thread Warren
something without the aid of a bookshelf full of reference materials? I do feel plugging numbers into the formulaes is beneficial, but this might be better handled with out of class assignments. Depends again on what you want to test...computation or concept. Warren "T.S. Lim" wrote:

Re: Sample size: way tooo big?

2000-03-23 Thread Warren
antly different from zero is it? Your larger sample will allow you to estimate the mean with more precision. (I'm not sure that I agree that larger samples are more problematic from the terms of missing data than smaller samples...that's a problem with study design, not sample size.) Warren Ma

New books list on KCS web site

2000-02-03 Thread Warren Kovach
about our statistical software and download evaluation versions (http://www.kovcomp.com/). -- Dr. Warren L. Kovach Kovach Computing Services 85 Nant-y-Felin, Pentraeth, Anglesey Wales LL75 8UY U.K. Tel.: +44-1248-450414 | Fax

Re: help: independence of data

2000-01-13 Thread Warren
Thom Baguley wrote: christophe tourenq wrote: I am a biologist (definitely not a statistician) in France with very limited access to statistical resources and I wonder if someone can give me some advice. I have been conducting weekly bird counts in wetland areas for a period of 1