[R] ANOVA procedure on the sufficient statistics

Michael Friendly friendly at yorku.ca
Wed Feb 18 14:52:32 CET 2004

>I have a two-way anova with unequal cell numbers that I want to analyze. 
>The problem is I don't have individual observations of the data.
>I only have the sufficient statistics (mean, variance, # of observations) for each cell. 
>Is there any existing function in S-plus that would allow me to do aov() with the sufficient statistics?

David Larsen, Analysis of Variance With Just Summary Statistics
   as Input,  The American Statistician, May 1992, Vol. 46(2), 151-152.

This is implemented in SAS,
  Doc: http://www.math.yorku.ca/SCS/sasmac/stat2dat.html

Shouldn't be hard to do in 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

More information about the R-help mailing list