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st: RE: Weibull


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Weibull
Date   Mon, 2 Mar 2009 13:36:12 -0000

I don't understand what you mean by "generate" here. Do you mean
simulate? 

Likewise, it is not clear to me whether (a) you have considered -st-
methods or (b) your problem requires -st- methods. 

If no to (b), -weibullfit- from SSC is one program that may help. 

More generally, -findit weibull- points to official and user-written
support. It's an easy keyword to use. 

Nick 
n.j.cox@durham.ac.uk 

Nikolaos Pandis

I would like to generate continuous data for two groups for which I
would like to evaluate whether there is a difference between their means
(I could use use a t-test). I would like to be able to  set the mean and
sd of the two groups. The data would represent bond failure strength (in
MPa) of two different materials (the 2 groups). 

Additionally, I would like to generate data for the same experiment that
follows the Weibull distribution and compare the two groups.


It is of interest to see the results of the analysis on the data under
the ttest analysis and under an analysis suitable for the Weibull
distribution. The objective is to show how different analyses of similar
data might point to different results, and the importance of selecting
the correct distribution and analysis.

Any advice, references, help would be greatly appreciated.


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