Hi, 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?
See: 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