There are anova {stats} and aov in R. It seems that anova takes an
object returned by a model fitting function. But I don't see any
examples for anova. Can somebody give me a simple example on anova?
What is the difference between anova and aov?
Chuck Cleland
2009-Oct-27 17:16 UTC
[R] What is the difference between anova {stats} and aov?
On 10/27/2009 1:06 PM, Peng Yu wrote:> There are anova {stats} and aov in R. It seems that anova takes an > object returned by a model fitting function. But I don't see any > examples for anova. Can somebody give me a simple example on anova? > What is the difference between anova and aov?http://finzi.psych.upenn.edu/Rhelp08/2009-January/184619.html fm1 <- aov(breaks ~ tension + wool, data=warpbreaks) fm2 <- aov(breaks ~ tension * wool, data=warpbreaks) anova(fm1) anova(fm2) anova(fm1, fm2) See ?anova.lm and ?anova.glm for more anova() examples.> ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.-- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894