search for: kempthorn

Hello, I'm having some difficulty understanding the useage of the "dropterm()" function in the MASS library. What exactly does it do? I'm very new to R, so any pointers would be very helpful. I've read many definitions of what dropterm() does, but none seem to stick in my mind or click with me. I've coded everything fine for an interaction that runs as follows: two sets

...package, along with his excellent book, which should explain how to avoid shooting yourself in the foot over this. (This difference of opinion on what should sensibly be done, by the way, predates R by a long shot. My first exposure to it were with the very acrimonious disputes between Nelder and Kempthorne in the mid 70's. It has remained a cross-Atlantic dispute pretty well ever since, with the latest shot being the paper by Lee and Nelder in 2004. Curiously, the origin of the software can almost be determined by the view taken on this issue, with Genstat going one way and SAS, SPSS, ... the...