[R] lm without intercept

[citynorman]

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 :)



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