This is a nested design where team is nested in group. Method is fixed, while team and group are random. Is this the correct R code for this? gunload.aov <- aov(rounds ~ method+group + Error((team %in% group)/method),data=gunload, qr=T) -- View this message in context: http://n4.nabble.com/nested-design-tp1569449p1569449.html Sent from the R help mailing list archive at Nabble.com.