[R] aov problem

Chuck Cleland ccleland at optonline.net
Tue May 15 15:24:33 CEST 2007


Anders Malmendal wrote:
> I am using R to make two-way ANOVA on a number of variables using
> 
> g <- aov(var ~ fact1*fact2)
> 
> where var is a matrix containing the variables.
> However the outcome seem to be dependent on the order of fact1 and fact2 
> (i.e. fact2*fact1) gives a slightly (factor of 1.5) different result.
> Any ideas why this is?

RSiteSearch("sequential sums of squares")

> Thanks for any help
> Anders
> 
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