[R] Beginner: Homogenity of Variances
friendly at yorku.ca
Sun Nov 2 16:36:18 CET 2003
"Markus Koesters" <Markus.Koesters at uni-jena.de> wrote:
>for my meta-analysis I try to test if two varainces are equal without
>using the raw scores. I have is the SD's, N's and the Means.
>I want to test the variances from dependent and independend
>I assume I can use the var.test procedure for the independent
>samples, but what about the dependent samples ? Has anyone an
>idea how to realise this with R ?
>Thanks in advance
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
This is implemented and described in my STAT2DAT macro,
It should be easy to translate into R.
Michael Friendly Email: friendly at yorku.ca
Professor, Psychology Dept.
York University Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT M3J 1P3 CANADA
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