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st: RE: variance of the residual

From   "Maarten Buis" <>
To   <>
Subject   st: RE: variance of the residual
Date   Thu, 15 Feb 2007 13:43:43 +0100

--- Cinzia Rienzo wrote:
> i want to decompose the variance of the residuals (that i got from a
> regression) into bwithinn beetwen and total; this has to be for groups
> and by year; so since i have 20 groups i should have 20 values for the
> Within B and Total variance for each year.

It seems to me that what you want to do is an ANCOVA (an ANOVA but 
controlled for some other possibly continuous covariates). This can be 
done with the -anova- command, see: -help anova-.
Hope this helps,

Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434 

+31 20 5986715

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