I notice something curious about how aov() treats a numeric factor: "score" is a dependent variable and "group" is a factor in a one-way ANOVA. But "group" contains numeric codes and is not a factor (checked with is.factor). An ANOVA done using:
> aov(score~factor(group), data=mydata) gives the right answers. But > aov(score~group, data=mydata) also produces an ANOVA table, with incorrect entries. My question is: what exactly is R doing when I did not specify that "group" was a factor? Ravi Kulkarni -- View this message in context: http://r.789695.n4.nabble.com/Question-about-factor-that-is-numeric-in-aov-tp2164393p2164393.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@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.
