On Jan 6, 2013, at 09:45 , peter dalgaard wrote: > > Just avoid things like Type-III sums of squares (base R won't do them, but > popular add-ons will) because they get it wrong when cell counts are unequal.
That might be a bit unfair. Type-III methodology has its proponents, I'm just not one of them. Within their own logic, I'm sure Type-III SS are computed correctly. It's just that this is one of the cases where you can be misled into thinking that the design is orthogonal so Type-III and Type-II is the same. It isn't. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.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.
