Re: Likelihood Ratio Test

1999-12-06 Thread Herman Rubin
In article <82harm$1ae$[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> wrote: >I turns out that the difference between the constrained and >unconstrained log likelihoods has a chi-square distribution (dergr. of >freedom =restrictions) when it is multiplied by two. >Where the two comes from is something

Re: Mathematics and mind...

1999-12-06 Thread Telefina
it worked fine for me...perhaps your computer just coughed Neil W Rickert wrote: > > [EMAIL PROTECTED] (Thomas Lawlor Griffiths) writes: > > >For those interested in mathematics and mind... > > >I'm running a simple psychology experiment over the internet. It > >doesn't take much time, and ver

Likelihood Ratio Test

1999-12-06 Thread lazzo
I turns out that the difference between the constrained and unconstrained log likelihoods has a chi-square distribution (dergr. of freedom =restrictions) when it is multiplied by two. Where the two comes from is something I am not getting. (or -2, the information I have isn't completely consisten

Re: Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread Jerry Dallal
[EMAIL PROTECTED] (Robert Dawson) writes: > Jerry Dallal wrote: > >> Here's one. >> Lack of readily available software to produce confidence intervals. >> In some simple situations, confidence intervals for some population >> quantities are available through the order statistics, but I don't >> k

Re: Mathematics and mind...

1999-12-06 Thread Neil W Rickert
[EMAIL PROTECTED] (Thomas Lawlor Griffiths) writes: >For those interested in mathematics and mind... >I'm running a simple psychology experiment over the internet. It >doesn't take much time, and very little mental effort. It is vaguely >related to mathematics, and you might be interested in th

Mathematics and mind...

1999-12-06 Thread Thomas Lawlor Griffiths
For those interested in mathematics and mind... I'm running a simple psychology experiment over the internet. It doesn't take much time, and very little mental effort. It is vaguely related to mathematics, and you might be interested in the outcome. If you take part in the experiment, you get sh

Re: Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread dennis roberts
At 10:33 AM 12/6/99 -0700, Alex Yu wrote: >Disadvantages of non-parametric tests: seems to me that before one lists out "dis" advantages ... or for that matter "ad" vantages ... one needs to be very clear on what one wants to know about the target population ... now, in some cases ... there m

Re: Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread Alex Yu
Disadvantages of non-parametric tests: Losing precision: Edgington (1995) asserted that when more precise measurements are available, it is unwise to degrade the precision by transforming the measurements into ranked data. Low power: Generally speaking, the statistical power of non-parametric

Re: stats packages for Unix

1999-12-06 Thread Peter Parzer
try stata http://www.stata.com David Cross/Psych Dept/TCU <[EMAIL PROTECTED]> wrote: : Check out the following websites: : http://forrest.psych.unc.edu/ : http://www.linuxapps.com/ : Cheers, : David Cross : On Thu, 2 Dec 1999, Bob Hayden wrote: :> Any advice on basic stats. packages for Unix

Re: Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread Robert Dawson
Jerry Dallal wrote: > Here's one. > Lack of readily available software to produce confidence intervals. > In some simple situations, confidence intervals for some population > quantities are available through the order statistics, but I don't > know of any readily available software that produces

Re: Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread Jerry Dallal
"boonlert" <[EMAIL PROTECTED]> writes: > Dear All > Could anyone kindly tell me a major disadvantage of using > non-parametric test compared to parametric test? > Your response will be appreciated. > Here's one. Lack of readily available software to produce confidence intervals.

Re: "Lambda" for discarding data

1999-12-06 Thread Rich Ulrich
On Fri, 03 Dec 1999 18:18:21 -0800, [EMAIL PROTECTED] (PBL Powerbase 180) wrote: >First, I am a molecular biologist and have only taken intro stats > courses during my undergrad days. > > I am trying to find a criterion to use as an objective cutoff to discard > data from experiments. I use

Re: probability question

1999-12-06 Thread Michael Cohen
Michael Cohen ([EMAIL PROTECTED]) wrote: : : On Wed, 1 Dec 1999, Yonah Russ wrote: : : : : > how do you solve a problem like this one? : : > thanks in advance : : > --- : : > X is a chance variable such that X(omega)={1,2,3...,n} : : > and for every i in {1,2,3...n}, 4P(X=i+2)=5P(X=i+1)-P(X=i

Disadvantage of Non-parametric vs. Parametric Test

1999-12-06 Thread boonlert
Dear All Could anyone kindly tell me a major disadvantage of using non-parametric test compared to parametric test? Your response will be appreciated. Regards, Boonlert W.