I have a puzzle.... When I include an interaction in the model, many predicted probabilities are above 1. Is that a problem with my model? I thought the predicted prob can't be bigger than 1...
Any help would be really appreciated! Thanks! K. reg1<-glm(pyea~male+edu+married+inc+relig+factor(time)+ factor(time)*male, data=mydata, family=binomial(link="logit")) reg2<-predict.glm(reg1, se.fit=T, data.frame(male=1, edu=1, married=1,inc=1, relig=1, type='response', YEAR=seq(1,33,1)) reg2$fit $fit 1 2 3 4 5 6 7 8 9 10 11 0.6105101 0.5249279 0.4717028 0.5525786 0.5622492 0.3387205 0.3010051 0.5836462 0.6478388 0.9158862 0.9849557 12 13 14 15 16 17 18 19 20 21 22 1.1208788 1.1440165 1.2053129 1.0169487 1.1832429 1.4162309 1.0612279 1.2038962 1.1274700 1.0876280 0.9704570 23 24 25 26 27 28 29 30 31 32 33 1.0160205 1.0410419 0.9526990 1.0043029 1.1337670 1.2502910 0.9927158 1.0924190 0.8315262 1.0530386 1.5727090 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.