> -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Georgiana May > Sent: 19 March 2012 14:06 > To: r-help@r-project.org > Subject: [R] regression with proportion data > > I understand that the binomial function concerns successes > vs. failures and can use those raw data, but the R Book and > other sources seem to suggest that proportion data are usable > as well. Not so?
You _can_ use a two-column matrix with counts of successes and failures in the two columns And if you know what the number n of observations was (which you would need to anyway for using proportions in a logistic regression) youcan calculate that matrix from the proportions and n, as long as you're reasonably careful about rounf=ding. S Ellison******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}} ______________________________________________ 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.