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...point. if THIS won't even run.... something is wrong. i can assure you this isn't HW.... i know dave, but i am no longer at UW-M and i have never learned HLMs and i am learning this on my own for my own research. his code is here, along with data. it is short, quick, etc. http://www.quantoid.net/936/Lecture7.R ### R code from vignette source 'Lecture7.Rnw' ################################################### ### code chunk number 1: opts ################################################### options(useFancyQuotes=F) ################################################### ### code...

Hi, I have a problem with the ordered probit model -polr function (library MASS). My independent variables are countinuos. I am not able to understand two main points: a) how to calculate marginal effects b) how to calculate the relative importance of each independent variables If required i will attach my model output. Thanks Franco

Hi, I am running an analysis with an ordinal outcome and I need to run a test of the parallel regression assumption to determine if ordinal logistic regression is appropriate. I cannot find a function to conduct such a test. >From searching various message boards I have seen a few useRs ask this same question without a definitive answer - and I came across a thread that indicated there is no

Hi everyone, Does anyone here has experience using MICE to impute missing value? I am having problem to pool the imputed dataset for a MANOVA test, could you give me some advice please? Here is my code: > library(mice) >