For normality check out: ?shapiro.test HTH! Schalk On Tue, Jan 5, 2010 at 5:32 AM, Haiyang AI <aihaiy...@gmail.com> wrote:
> Dear all, > > I'm a beginner of R and I need to carry out some three-way mixed ANOVAs. > Following examples at http://personality-project.org/r/r.anova.html, I > managed to get the ANOVA part, but I don't know how can I check data > normality and homogeneity of variance in R (since they're the required > assumptions of ANOVA analysis). > > Are there any special command/packages? Could anyone give me some > pointers/examples? > > Best regards, > Haiyang > > -- > Haiyang AI, Ph.D. student > Department of Applied Linguistics > The Pennsylvania State University > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
