search for: datatobitnew

...romotion (dummy), Season(dummy) and store (dummy) Used standard Tobitmodel with package(AER) vor a 48 week period: tobitmodel<-tobit(SALE~Price+Promotion+Season+Store,data= datatobit) Now I want to predict the values for week 49-52. Used predict device: pred<-predict(tobitmodel, newdata=datatobitnew) I receive negative predicted values for Y! That does not make any sense?? Do I use the device wrong? Is there another way to predict Sales for new data? Thank you very much in advance for your help! -- View this message in context: http://www.nabble.com/HELP%3A-Use-predict-for-Tobit-Model.-How...