Re: Help for DL students in doing assignments

2001-10-01 Thread markov
On Mon, 01 Oct 2001 16:51:27 GMT, Jon Miller <[EMAIL PROTECTED]> wrote: >"Dr. Fairman" wrote: > >> Dear DL Students, > >What's a DL student? "distance learning" student? = Instructions for joining and leaving this list and remarks

semi-studentized residual

2001-10-01 Thread James Ankeny
Hello, I have a question regarding the so-called "semi-studentized residual," which is of the form (e_i)* = ( e_i - 0 ) / sqrt(MSE). Here, e_i is the ith residual, 0 is the mean of the residuals, and sqrt(MSE) means the square root of MSE. Now, if I understand correctly, the population simple l

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2001-10-01 Thread YAP Sook Fwe (MME)
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Logistic Regression vs Chi Square test in the following scenario

2001-10-01 Thread Nick
Hi I have a question to the group here. Let's say I have two variables: y is the dependent variable, x is the independent variable. X Y --- 0 1 1 1 1 1 1 0 0 0 0 1 1 0 1 1 etc etc. Both variables are binary and discrete. I want to see if there is a rel

Re: optimal sample size

2001-10-01 Thread Bernhard Kuster
> I think I am trying to say, gently, that your basic question doesn't > make very good sense to me; and it did not, to Dennis, either. > "Optimal" is one problematic word. Another problem is that > you seem to ask about all research, in all of the world > It might be a clever way to att

Re: optimal sample size

2001-10-01 Thread Bernhard Kuster
> what is the MINIMAL n needed to accomplish these ends" ... that might be optimal if you are looking for the > smallest n you can get by with ... but, optimal does not have to be defined > as such ... Thanks for your comments. To be honest, for me the term "opitmal" (which seems not to be a very

Re: Help for DL students in doing assignments

2001-10-01 Thread Nimish Shah
> Dear DL Students, > > I have Ph.D. degree in mathematics, physics, electrical engineering, > computer science. Can you please post details of your 3 PhDs! Nim. = Instructions for joining and leaving this list and remarks about

Re: Help for DL students in doing assignments

2001-10-01 Thread Rich Carreiro
Jon Miller <[EMAIL PROTECTED]> writes: > What's a DL student? "Distance Learning", I'd imagine. -- Rich Carreiro[EMAIL PROTECTED] = Instructions for joining and leaving this list and remarks about the

Re: They look different; are they really?

2001-10-01 Thread Jill Binker
Be careful of the move from data to conclusion! You say "whether one class really is learning the subject better than the other, and by how much?" Even assuming the test yields a good measure of how well the students know the material (which should be investigated, rather than assumed), it isn't

Re: They look different; are they really?

2001-10-01 Thread dennis roberts
were these two different sections at the same class time? that is ... 10AM on mwf? if not ... then there can be all kinds of reasons why means would be this different ... nonewithstanding one or two real deviant scores in either section ... could also be different quality in the instruction ..

Looking for Presenters at the ISF 2002 in Dublin

2001-10-01 Thread Tom Reilly
I am looking for interested parties to present next June in the field of "Intermittent Demand" Forecasting. Of course, if you have an interest in another area I will be glad to pass your name on to for consideration. If you are interested send me an e-mail at [EMAIL PROTECTED] stating a synopsis

Re: They look different; are they really?

2001-10-01 Thread Gus Gassmann
Stan Brown wrote: > Another instructor and I gave the same exam to our sections of a > course. Here's a summary of the results: > > Section A: n=20, mean=56.1, median=52.5, standard dev=20.1 > Section B: n=23 mean=73.0, median=70.0, standard dev=21.6 > > Now, they certainly _look_ different. (If

Re: optimal sample size

2001-10-01 Thread Rich Ulrich
On Mon, 1 Oct 2001 12:23:28 +0200, "Bernhard Kuster" <[EMAIL PROTECTED]> wrote: > Hi > > I am interessted in the question of optimal sample size in general, not for > a special statistical technique. (a) There was a notable 1974 article on "Believability when N=1" and here is an academic webpag

Re: Help for DL students in doing assignments

2001-10-01 Thread Jon Miller
"Dr. Fairman" wrote: > Dear DL Students, What's a DL student? Jon Miller = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat

Re:

2001-10-01 Thread Rich Ulrich
Just a reminder, folks - The Usenet group is linked to a mailing list. If you really want to Unsubscribe from the mailing list, do NOT post your request to the group's address for Questions. Please heed the message which is listed AT THE BOTTOM OF EVERY MAIL-LIST MESSAGE - and read those i

They look different; are they really?

2001-10-01 Thread Stan Brown
Another instructor and I gave the same exam to our sections of a course. Here's a summary of the results: Section A: n=20, mean=56.1, median=52.5, standard dev=20.1 Section B: n=23 mean=73.0, median=70.0, standard dev=21.6 Now, they certainly _look_ different. (If it's of any valid I can post

Re: They look different; are they really?

2001-10-01 Thread Jerry Dallal
Stan Brown wrote: > _is_ there a valid statistical method to say whether > one class really is learning the subject better than the other, and > by how much? If your question is, "Do the means disagree by more than one would expect if the 43 individual grades were partitioned into two sets of 20

Re: What is a confidence interval?

2001-10-01 Thread Jerry Dallal
Ronald Bloom wrote: > > Jerry Dallal <[EMAIL PROTECTED]> wrote: > > John Jackson wrote: > >> > >> this is the second time I have seen this word used: "frequentist"? > > > Since Radford Neal has already given an excellent explanation, > > let me add... > > > A roulette wheel comes up with a red

edstat@jse.stat.ncsu.edu

2001-10-01 Thread Charles Blaich
unsubscribe -- Charles Blaich Daniel F. Evans Associate Professor of Social Science Special Assistant to the Dean for Strategic Initiatives Wabash College Crawfordsville, IN 47933 = Instructions for joining and leaving this list

"Pluma y Fuente" Nº 177 del 01/10/2001.

2001-10-01 Thread Pluma
__ Logos Traducciones - www.logos.it __ "Pluma y Fuente" del 01/10/2001. Edición Nº 177. Informaciones seleccionadas por Reporters Online EDITORIAL DEL DÍA. Histórica Resolución del Consejo de Seguridad ONU contra el terrorismo, por ahora

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2001-10-01 Thread Dianne Worth
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Re: optimal sample size

2001-10-01 Thread Dennis Roberts
of course. the most important issue is ... what do you mean by optimal? if you can specify what the purpose of the sampling project is ... the parameter to be estimated, within what margin of error, etc. ... then you might be able to answer the question ... "what is the MINIMAL n needed to acc

optimal sample size

2001-10-01 Thread Bernhard Kuster
Hi I am interessted in the question of optimal sample size in general, not for a special statistical technique. My questions: (1) What do I have to keep in mind if I compute optimal sample size, what is relevant? (2) What are the classic studies and who has highly influenced the subject? (3) Wha

K-Means QuickClusteranalysis (OptimalSolution)

2001-10-01 Thread Christian
Hello, i look for a good way to find the optimal number of cluster for a special problem ! Is it right to sum the distanceValues^2 and look for the point where these sumOfEuclideanDistance have the most lost from one to the next ClusterSolution ? P.S. I hope my english is not to bad ;-( thank