[R] issue with Rcmdr

[Norm Matloff]

> Message: 14
> Date: Wed, 8 Jan 2020 09:59:56 -0800
> From: Bert Gunter <bgunter.4567 using gmail.com>
> To: Norm Matloff <nsmatloff using ucdavis.edu>
> Cc: R-help <r-help using r-project.org>
> Subject: Re: [R] issue with Rcmdr
 
> ... and even more generally, is generally misleading. ;-)
 
> (search "problems with R^2" or similar for why).
 
> Bert Gunter

I was addressing the OP's issue of computing R^2.  Its value in analysis
is a separate question.  If one's goal is prediction, it arguably is
fairly good providing we avoid overfitting.  If our goal is inference,
R^2 still is informative, but limited.

Norm