[R] Beginner: Homogenity of Variances

Markus Koesters Markus.Koesters at uni-jena.de
Tue Nov 4 17:54:14 CET 2003

> >
> For independent samples there is a simple technique described by Larsen, 
> Am. Stat, May 1992
> for turning summary statistics back into a data set with an equivalent 
> ANOVA summary.
> This is implemented and described in my STAT2DAT macro,
>  http://www.math.yorku.ca/SCS/sasmac/stat2dat.html
> It should be easy to translate into R.

This is an interesting way - but most software packages test 
homogeneity of variances with the Levene Test. This can't work in 
this way, becas eit uses the median for calculation of the test 
But the real problem are the dependent measures...


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> Professor, Psychology Dept.
> York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
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