The cor(mtcars$mpg, fitted(m0))^2 method works great - thanks so much Josh!
I've had another instance (also ex intercept) where it actually gave the correct number, odd behavior. Thanks for the other posts also. As an aside, in my application a zero intercept makes economic sense and I'm using R^2 for just a crude measure of fit as sort of a first pass test so no worries there :) -- View this message in context: http://r.789695.n4.nabble.com/lm-without-intercept-tp3312429p4640328.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.