On Sat, Nov 12, 2011 at 08:22:00AM +0000, John Darrington wrote: > I've been reading a bit about two way anova with unbalanced designs. > > I concluded that we should have been using what the literature calls > "effects coding" http://www.ats.ucla.edu/stat/mult_pkg/faq/general/effect.htm > instead of "dummy coding" > http://www.ats.ucla.edu/stat/mult_pkg/faq/general/dummy.htm which is what we > have been using until now. > > However I tried hacking up a quick change to use "effects coding", but > unfortunately it didn't improve anything. > > Am I barking up the wrong tree here?
Could be. I started thinking about this again recently, and I suspect the problem has to do with weights for unbalanced designs. The "effects coding" may address this. I'll look around more and let you know what I find. -Jason _______________________________________________ pspp-dev mailing list [email protected] https://lists.gnu.org/mailman/listinfo/pspp-dev
