[R] Three-way ANOVA?

From: <e.rapsomaniki_at_mail.cryst.bbk.ac.uk>
Date: Sat 31 Jul 2004 - 06:01:56 EST


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 variables?

Many Thanks

R-help@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jul 31 06:07:57 2004

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