Re: Statistics Software

In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says... > >> Shana Mueller wrote: > >> > I am looking for a stastical software package I have only used the JMP >> > software (mostly for Design of Experiments) in the past but am looking >> > for software that will not only help in planning exp

Re: Programs for Standard Deviation

In article , [EMAIL PROTECTED] says... > >My daughter has asked me if there are any tools / software programs that can >resolve standard deviations, while Excel can determine a standard deviation >of the Population, what formula is used for the >(A) 5th Standard Devi

Statistics Conference Announcement

~~~ BEYOND THE FORMULA IV "Introductory Statistics for A New Century: Looking at the Complete Picture of Curriculum, Teaching Techniques, Technology and Applications"

Re: Kruskal-Wallis & equal variances

On Fri, 24 Mar 2000 02:15:52 GMT, Gene Gallagher < snip, good summary of some issues > > SO, my question is "What is the current thinking on the robustness of > the Kruskal-Wallis test for testing groups with very different > variances?" Is Underwood right in his assessment that the nonparametr

Re: log-Reg and colinearity

On Fri, 24 Mar 2000 Llorenç Badiella <[EMAIL PROTECTED]> wrote: > Is it a problem that there exists colinearity between > variables when performing a Log-Reg? If so, how avoid it? It can be a problem, or for that matter several problems. Depends on how severe the collinearity is, among other

Re: Normality & parametric tests (WAS: Kruskal-Wallis & equal va

On Fri, 24 Mar 2000, Bernard Higgins wrote: > > > Hi Bruce Hello Bernard. > > The point I was making is that when developing hypothesis tests, > from a theoretical point of view, the sampling distribution of the > test statistic from which critical values or p-values etc are > obtained, i

Re: successive intervals?

On Fri, 24 Mar 2000 06:05:27 GMT, [EMAIL PROTECTED] wrote: > I saw in a recent journal article mention of a technique for converting > ordinal scales to interval scales called *successive intervals*. I have > searched several references and can find no mention of it. Does anyone > know of a publi

Re: log-Reg and colinearity

On Fri, 24 Mar 2000 15:28:38 GMT, [EMAIL PROTECTED] wrote: > Is it a problem that there exists colinearity between > variables when performing a Log-Reg? If so, how avoid it? Sure, it is about the same problem as exists for OLS regression. If you really want to *avoid* it, you have to rational

Public domain nomenclature

Tony Rossini has taken the time to explain to me the importance of distinguishing between "freely available", "open source", and "public domain" software. The first two have a similar meaning and are both different from the last. My software is more in the first two categories. I stand corr

Fwd: time tests for S-plus

>Date: Fri, 24 Mar 2000 10:00:18 -0800 >To: EDSTAT-L <[EMAIL PROTECTED]> >From: Jan de Leeuw <[EMAIL PROTECTED]> >Subject: time tests for S-plus >Cc: >Bcc: >X-Attachments: > >This is where we stand so far > > Program:test1test2 test3test4test5 > Iterations: 500 1

time tests for S-plus

This is where we stand so far Program:test1test2 test3test4test5 Iterations: 500 1000 1 1000 10 S-PLUS 3.4: 18.3 9.0 38.4 31.0232.9 S-PLUS 5.1: 75.0152.6 317.1544.8224.1 R 0.90.1: 56.5

Re: Normality & parametric tests (WAS: Kruskal-Wallis & equal va

Hi Bruce The point I was making is that when developing hypothesis tests, from a theoretical point of view, the sampling distribution of the test statistic from which critical values or p-values etc are obtained, is determined by the null hypothesis. We need a probability model to enable us

Multidimensional Models IRT

I study statistics in the University of Pernambuco, Brazil. I'd like to obtain informations(paper, software) about Multidimensional Models for Item Response Theory. Thanks Ronald === This list is open to everyone. Occasio

log-Reg and colinearity

Hi all, Is it a problem that there exists colinearity between variables when performing a Log-Reg? If so, how avoid it? Thanks in advance, Llorenç Badiella [EMAIL PROTECTED] Sent via Deja.com http://www.deja.com/ Before you buy. ==

Re: Help! Survival curve plot (Kaplan-Meier) with absolute numbers -

I stand by what I said. The function is a public-domain S-PLUS library. It is not an R library at present. If it clarifies this for anyone, in the future I'll label this as being in the public-domain S-PLUS library for S-PLUS users. -Frank "A.J. Rossini" wrote: > > "FEH" == Frank E Harr

Re: successive intervals?

On Fri, 24 Mar 2000 Wendell <[EMAIL PROTECTED]> wrote: > I saw in a recent journal article mention of a technique for converting > ordinal scales to interval scales called *successive intervals*. I have > searched several references and can find no mention of it. Does anyone > know of a published

6 NJ short courses & seminars

Springtime for Statistics (April-May-June) Six New Jersey Area announcements [1] Logistic Regression Short Course [2] Clinical Trials Short Course [3] Multiple Comparison & Exact Inference Short Courses [4] Bates' Nonlinear Regression Short Course [5] I

Re: Sample size: way tooo big?

On Thu, 23 Mar 2000 16:01:13 -0500, Rich Ulrich <[EMAIL PROTECTED]> wrote: >Now let me jump on Andy! > > >On Thu, 23 Mar 2000 17:51:04 GMT, [EMAIL PROTECTED] (Andy Gilpin) >wrote: > < snip, problem; comment > >> >> Still, it seems to me that, other things equal, (a) measuring data >> costs a r

Re: Normality & parametric tests (WAS: Kruskal-Wallis & equal variances)

On 24 Mar 2000, Bernard Higgins wrote: > These are my thoughts: > > The sampling distribution of a test statistic is determined by the > null hypothesis. So analysis of variance is used to test that a > number of samples come from an identical Normal distribution > against the alternative that

Re: over and above

>There is a conflict between practice and experience in that a goal of >practice is to reach the point where you carry out the procedure >WITHOUT THINKING ABOUT THE UNDERLYING CONCEPTS OR PRINCIPLES. It >beomes automated and brainless, a skill of the fingers (or toes). For >that reason, I think

Re: Calculator policy

Muriel Strand wrote: > i would like to (approximately) echo the other responses on this topic. last > fall i was almost trapped in a very poorly taught econometrics class and the > clincher was when i showed up to take the first exam and found out it was to be > closed book - it never even occu

Re: over and above

Herman Rubin wrote: > > snip > > > > This might possibly be the case for the weak students, but > > not for the strong ones. It is the concepts which are the > > most important part, and concepts need little, if any, > > practice and Muriel Strand responded: > i'm not sure the statement below

Re: Calculator policy

> in addition, since good calculators allow storage ... The problem arises when (eg) a few calculators can construct boxplots or do t tests and the rest cannot. "Storage" is a convenient surrogate for "all-singing, all-dancing, able to mix a martini and talk football"

Re: Kruskal-Wallis & equal variances

Hi Gene > I'd just finished telling my class that when the assumption of > homogeneity of variances is violated, use the Kruskal-Wallis test > instead of the parametric equivalent. > One student pointed out to me afterwards that Underwood (1997, p. 131, > Experiments in Ecology) states that the

Bruno de Finetti

Does anybody know where to find basic bibliografical info about Bruno de Finetti on the web? Thank you very much Renzo === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. P