On Aug 27, 2011 franco salerno wrote: > ...problem with ordered probit model -polr function (library MASS). > a) how to calculate marginal effects > b) how to calculate the relative importance of each independent variables
Hi Franco, Have a look at John Fox's effects package (for a), and the Anova() function in his car package (for b). Regards, Mark. ----- Mark Difford (Ph.D.) Research Associate Botany Department Nelson Mandela Metropolitan University Port Elizabeth, South Africa -- View this message in context: http://r.789695.n4.nabble.com/Ordered-probit-model-marginal-effects-and-relative-importance-of-each-predictor-tp3773504p3774060.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
