Re: [R] modelling probabilities instead of binary data with logistic regression

2009-03-24 Thread joris meys
Thank you all for the very fast answers. My proportions come from a factor analysis on a number of binary variables, in order to avoid having to fit 12 logistic regressions on the same dataset. By scaling the obtained scores to 0 and 1, I get weighted averages of the response combinations I'm inte

[R] modelling probabilities instead of binary data with logistic regression

2009-03-24 Thread joris meys
Dear all, I have a dataset where I reduced the dimensionality, and now I have a response variable with probabilities/proportions between 0 and 1. I wanted to do a logistic regression on those, but the function glm refuses to do that with non-integer values in the response. I also tried lrm, but th