Natalie:

There is a technique called "boostraping" for resampling from 
your data set to get a more stable estimate of values.  You may 
want to check your local stat package to see if that is 
available.

For class assignments I use "lo-tech" techniques like Jim and 
create pseudosubject scores by jittering the data with calls to 
a random number generator such that the mean jitter effect is 0 
and the range is some reasonable value, depending on the 
question.

Treatment effects may be simulated by adding a jitterized 
constant.

Ken



On Tue, 07 Nov 2000 15:33:53 -0500 Nathalie Cote 
<[EMAIL PROTECTED]> wrote:

> Suppose you were in a Methods or Statistics class in which you had to design
> a study, create the materials, collect some of the data, and then use the
> data from this partial sample to simulate or fill in fictitious data for the
> rest of the sample. 
> 
> Let's say, for example, that you've collected scores on self-esteem and body
> image instruments from 10 college men and 10 college women, and you want to
> use those data as the basis for generating fake data for 40 more women and
> 40 more men. The data will then be analyzed for correlations between the
> measures and differences between men and women on each measure and on the
> correlations. 
> 
> One thread, of course, might be to discuss why anyone would want to do this.
> Let's assume for the moment that it's done for good reasons. What I am
> interested in is, how would you go about simulating the data? 

----------------------
Kenneth M. Steele                [EMAIL PROTECTED]
Dept. of Psychology
Appalachian State University
Boone, NC 28608
USA 



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