Re: hyp testing -Reply

2000-04-18 Thread Alan McLean
Hi Dennis, Robert's observation is 'spot on' because it is the way things are, rather than the way we would like to think things are. I (of course) agree that people writing papers should have some sense of proportion the claims made in their papers. Nevertheless, if you want to study the gag ref

Software for robust stats?

2000-04-18 Thread wende598
Hi, I'm a grad student in social science. My use of satistics software has been limited to SPSS because its simple user interface allowed me to easily do some simple non-parametric tests. But now, I am interested in trying some resistant analysis techniques I have read about, but they don't seem

Re: hyp testing -Reply

2000-04-18 Thread dennis roberts
>Robert Dawson wrote: > >> As far as random samples are concerned: it is *very* rare for a true >> random sample, based on an equal-probability sample of the population to >> which the inference is intended to extend, to be taken. Say a researcher is >> studying the behaviour of humans. (S)he

Re: The "best" effect size

2000-04-18 Thread Rich Ulrich
Here is a little bit of answer ... On 17 Apr 2000 07:39:02 -0700, [EMAIL PROTECTED] (Robert McGrath) wrote: < Snip. Concerning predictors based on field studies. ... predictors were all dichotomous, were related to a series of criteria, some of which were dichotomous and some of which were q

Re: hyp testing -Reply

2000-04-18 Thread Alan McLean
Spot on, Robert. Alan Robert Dawson wrote: > Joe Ward wrote: > > Yes, there occasionally were discussions in our Air Force research > whether or not we were working with the POPULATION or a SAMPLE. > > As Dennis comments: > | > | > the flaw here is that ... she has population data i presume ..

Re: hyp testing -Reply

2000-04-18 Thread dennis roberts
At 03:37 PM 4/18/00 -0400, Rich Ulrich wrote: >I don't know how well they handle real data, but (a) Dennis has seemed >to fail this STANDARD, on certain hypothetical questions. However, I >don't like those hypothetical questions, because it is too easy to >pretend that they are something else.

Re: Finding statistical significance between 2 groups with categorical variables

2000-04-18 Thread Rich Ulrich
On Mon, 17 Apr 2000 15:26:16 -0700, einsetein <[EMAIL PROTECTED]> wrote: < reformating .. > > We have 2 groups reporting on the major problem for attending college. You have identified two groups, after the fact? ... > We are trying to see if the different response numbers are statistically >

multiple regression in excel

2000-04-18 Thread Marco Antonio Chamon
Hi, Everyone has a program (in excel) to performe multiple linear regression? If possible, I'd appreciate to have a copy. Thank you in advance. --Marco A. Chamon === This list is open to everyone. Occasionally, less thou

Re: split half reliability

2000-04-18 Thread Rich Ulrich
Trying to have it both ways, on 18 Apr 2000 08:13:08 -0700, [EMAIL PROTECTED] (Paul R Swank) wrote: > Depends on whether you consider a lack of item homogeneity as unreliability > or not. If your content is supposed to be homogeneous then a lack of > homogeneity implies your test has problems. If

Re: hyp testing -Reply

2000-04-18 Thread Rich Ulrich
On Mon, 17 Apr 2000 20:07:56 GMT, Charles D Madewell <[EMAIL PROTECTED]> wrote: > As a working engineer and part time graduate student I do not even > understand why anyone would want to do away with hypothesis testing. > I have spent many, many hours of my graduate school life learning, > readin

Re: split half reliability

2000-04-18 Thread Paul R Swank
I have never said that split half is better in general. In general, alpha is probably better. But in those instances when alpha doesn't fit, the split half technique may be quite useful. Coefficent alpha is based upon a model like all of statistics. If the model is inappropriate, then some other m

Significance of cross-correlation

2000-04-18 Thread G. Anthony Reina
I have two physiological signals (discharge rate of a neuron and electrical voltage [EMG] of a muscle). I'd like to determine the cross-correlation between the two signals as a function of time (i.e. if a "relationship" between the two signals exists, how does this "relationship" change over time)

Re: Hypothesis testing and magic - episode 2

2000-04-18 Thread Jerry Dallal
Herman Rubin wrote: > > The truth myth is highly persistent. We have the Delaney > Clause, which requires the FDA to ban any additive "which > has been found to cause cancer in humans or animals". > Now what does this mean? It is unlikely that anything > does not affect the cancer rate. > > We

Psychometrics Listserv

2000-04-18 Thread ethan arenson
Please forgive my cross-posting, but I am trying to reach as many people as possible. I'd like to present another avenue through which people can post comments and questions about psychometrics and about graduate study in educational measurement. To minimize spamming, only subscribers can pos

Re: split half reliability

2000-04-18 Thread Paul R Swank
Depends on whether you consider a lack of item homogeneity as unreliability or not. If your content is supposed to be homogeneous then a lack of homogeneity implies your test has problems. If your content is not necessarily homogeneous then the reduced alpha appears to say that your test is unreli

Want to buy: Optimal Stopping Rules (Shiryayev)

2000-04-18 Thread Bakulesh
Want to buy: Optimal Stopping Rules (Shiryayev) will buy at 1.5 times last listed price (oe negotiate). Must be complete (no missing pages). Reply to "from" address or (preferably) to [EMAIL PROTECTED] Thanks. === This li

Re: hyp testing -Reply

2000-04-18 Thread Robert McGrath
Paleontologists without vertebrae? I'm surprised you even found 20 ;-) - Original Message - > One of my Professors used to use the Invertebrate Paleontologists as his > example of a POPULATION. I think at that time there were less than 20 > people who were Invertebrate Paleontologists.

Re: hyp testing -Reply

2000-04-18 Thread Robert Dawson
Joe Ward wrote: Yes, there occasionally were discussions in our Air Force research whether or not we were working with the POPULATION or a SAMPLE. As Dennis comments: | | > the flaw here is that ... she has population data i presume ... or about | as | > close as one can come to it ... within th