search for: slopeb

I fit the model fit<-lm(thresh~cond*Ne) where thresh is the reponse cond is a factor with levels a, b, and c Ne is a continuous indep var I think of this full model as having three lines: thresh as a function of Ne for each condition. Thus we have slopea, slopeb, slopec, inta, intb, intc. lm output my params ------------------------- (Intercept) inta condb intb - inta condc intc - inta Ne slopea condb:Ne slopeb - slopea condc:Ne slopec - slopea This parametrization automatically compares inta vs intb inta vs...