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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 lousy math. --

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 different

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 you

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

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

How to write this kind of proposal? any sample?

hi; i have worked out something that can enhance the utility and profits of Altavista.com. I have prepared a brief writeup. I feel I should be more formal in presenting things to them Can someone please help me on 1) what should i call this proposal? Technical Proposal? or what? 2) Format of

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. Which is

[HELP NEEDED] What is the best technique to analyze the following experiment?

I performed the following experiment: Each user (U) used several interfaces (I). Both U and I are to be treated as random factors. For each U and I combination, time (T), errors (E) and satisfaction (S) were measured. The data looks something like: U I T E S ---

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 hypothesis

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 PROTECTED]

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 the

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,

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

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

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 *process* by which