Dear R-helpers,
In my dataset I have two continuous variable (A and B) and one factor.
I'm investigating the regression between the two variables usign the command
lm(A ~ B, ...)
but now I want to know the regression coefficient (r2) of A vs. B for every
factors.
I know that I can obtain this information with excel, but the factor have 68
levels...maybe [r] have a useful command.
Thanks,
Francesco Nutini
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