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st: RE: Anova with not variance homogeneity


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Anova with not variance homogeneity
Date   Wed, 3 Oct 2007 15:03:17 +0100

The syntax is just the same if the assumptions 
are not met exactly. 

Without knowing any details, it is difficult 
to advise, but a common tactic is to do the -anova-
on the original and on some transformed scale 
on which variances are more nearly homoscedastic. 

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

Rachele Capocchi
  
> Can anybody help me to do Anova test if there is difference 
> on the 3 groups' means with Stata, 
> considering that the variances of 3 groups are not homogeneity ?

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