Dear bp, Is it sensible to do Durbin-Watson and Breusch-Pagan tests for proportional-odds or ordered-logit models?
Best, John -------------------------------- John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Benjamin Polidore > Sent: December-22-10 12:47 PM > To: r-help@r-project.org > Subject: [R] tests on polr object > > Using ordered probit model, I get errors from dwt and bptest. > > dwt: > > Error in durbinWatsonTest.default(...) : requires vector of residuals > > bptest: > Error in storage.mode(y) <- "double" : > invalid to change the storage mode of a factor > > I imagine I have to restate as an individual probit model for each category, > but is there an easier way? > > thanks, > bp > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
