[R] Three-way ANOVA?
e.rapsomaniki at mail.cryst.bbk.ac.uk
Fri Jul 30 22:01:56 CEST 2004
I'm a biologist, so please forgive me if my question sounds absurd! I have 3
parameters x1, x2, x3 and a response variable y.The sample size is 75. I tried
to do the following:
mylm<-lm(y~ x1 + x2 + x3, data="mydata")
but i can only get stats from anova for the first 2 variables. The third comes
up as NA. The degrees of freedom for the third variable are 0.
Is there something else i could do to fit a model that contains all these three
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