Error() model is singular - what does that mean
On changing the parameters; using only Error(User), I don't get any warning on singularity. However most tutorials I saw seemed to point to using Error(User/(whatever i specified before)) Are there some rules which indicated when I should use only Error(User) and Error(User/(...)) Thanks Pascal -- View this message in context: http://r.789695.n4.nabble.com/Error-model-is-singular-what-does-that-mean-tp4635103p4635181.html Sent from the R help mailing list archive at Nabble.com.