I'm an R newbie and had the following question. I'm trying to run a logit model because I have a dependant variable that is a factor with three levels. Each of my independent variables are factor variables and have two or more levels, which is why I'm unsure about the error. regone <- glm(data96$RV961327 ~ data96$RV960605 + data96$RV960610 + data96$RV960337 + data96$RV960385 + data96$RV960417 + data96$RV960615 + data96$RV960698 + data96 $RV960714 + data96$RV961145 + data96$RV960067 + data96$RV960702, family=binomial(logit)) This produces the following error. Error in `contrasts<-`(`*tmp*`, value = "contr.treatment") : contrasts can be applied only to factors with 2 or more levels Help, Abraham M.
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