Re: Evaluating students

Dennis Roberts wrote: > At 08:56 AM 11/16/01 -0700, Roy St Laurent wrote: > >It's not clear to me whether recent posters are serious about these > >examples, but > >I will reiterate my previous post: > > > >For most mathematics / statistics examinations, the "answer" to a > >question is the > >*p

Re: diff in proportions

Hi On 16 Nov 2001, Rich Strauss wrote: > I've just done some quick simulations in Matlab, constructing randomized > null distributions of the t-statistic under both scenarious: (1) sample > variances based on sample means vs. (2) variances about the pooled mean. > Assuming I've done everything co

biostatistics careers

How is the job market for statisticians in the pharmaceutical industry? What are starting salaries for those with masters degrees and how does job satisfaction rate? Thank you Mike = Instructions for joining and leaving this list a

Re: diff in proportions

At 05:12 PM 11/16/01 +, you wrote: >>On Thu, 15 Nov 2001, Jerry Dallal wrote: >>> But, if the null hypothesis is that the means are the same, why >>> isn't(aren't) the sample variance(s) calculated about a pooled >>> estimate of the common mean? I've just done some quick simulations in Matlab

Re: Usability of skills and knowledge

On 16 Nov 2001 09:16:08 -0800, [EMAIL PROTECTED] (Rolf Dalin) wrote: > In a discussion about the desired direction of development of intro > level statistics courses, a group where I am a member came to a > preliminary agreement that It is important to develop applied > statistics. I started t

Re: Evaluating students

At 08:56 AM 11/16/01 -0700, Roy St Laurent wrote: >It's not clear to me whether recent posters are serious about these >examples, but >I will reiterate my previous post: > >For most mathematics / statistics examinations, the "answer" to a >question is the >*process* by which the student obtains th

Re: Dunnett Table

Table of what? Do you know about the SAS functions PROBMC('DUNNETT1', q, prob, df, ...) PROBMC('DUNNETT12, q, prob, df, ...) ? -- Randy Tobias, mailto:[EMAIL PROTECTED] SAS Institute Inc. SAS Campus Dr. Cary, NC 27513-2414 (919) 531-7933 (919) 677-8123 (Fax) "Lorraine" <[EMAIL PROTECTE

Re: diff in proportions

>On Thu, 15 Nov 2001, Jerry Dallal wrote: >> But, if the null hypothesis is that the means are the same, why >> isn't(aren't) the sample variance(s) calculated about a pooled >> estimate of the common mean? Another thought on this... A simpler question is, for a one-sample test of the hull hypot

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Re: Most Frequently Used Clustering Algorithm

"Chia C Chong" <[EMAIL PROTECTED]> wrote in message news:<9t1qd9$k6m$[EMAIL PROTECTED]>... > I wonder which clustering algorithm is the most > frequently used and maybe the most robust?? > > I intend to use some kind of clustering to identify two random variables in > obervations I have got. W

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Usability of skills and knowledge

In a discussion about the desired direction of development of intro level statistics courses, a group where I am a member came to a preliminary agreement that It is important to develop applied statistics. I started to think about that concept in terms of main goals of a course. The two main g

Re: Evaluating students

It's not clear to me whether recent posters are serious about these examples, but I will reiterate my previous post: For most mathematics / statistics examinations, the "answer" to a question is the *process* by which the student obtains the incidental final number or result. The result itself is

Re: diff in proportions

> Jerry Dallal wrote: > >But, if the null hypothesis is that the means are the same, why >isn't(aren't) the sample variance(s) calculated about a pooled >estimate of the common mean? I looked at this some years ago. The answer is straightforward: it would be logically valid to do so but

Re: diff in proportions

In article <[EMAIL PROTECTED]>, Jerry Dallal <[EMAIL PROTECTED]> wrote: >Radford Neal wrote: >> The difference is that when dealing with real data, it is possible for >> two populations to have the same mean (as assumed by the null), but >> different variances. In contrast, when dealing with b

Re: diff in proportions

In article <[EMAIL PROTECTED]>, dennis roberts <[EMAIL PROTECTED]> wrote: >At 08:03 PM 11/15/01 +, Radford Neal wrote: >>Radford Neal: >> >> The difference is that when dealing with real data, it is possible for >> >> two populations to have the same mean (as assumed by the null), but >> >> d

Re: Evaluating students

dennis roberts wrote: > would we give full credit for 87/18 = 7/1 ... 8's cancel? > > >Full marks. As Napoleon used to ask, "Is he lucky?". :) He/she deserves it.! > > > > -- > >John Kane > >The Rideau Lakes, Ontario Canada > > Of course not. No sign of inspired luck just lou

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