Re: [R] R2 always increases as variables are added?

From: Alberto Monteiro <>
Date: Mon, 21 May 2007 15:29:44 -0200

Paul Lynch wrote:
> I don't think it makes sense to compare models with
> and without an intercept term. (Also, I don't know what the point of
> using a model without an intercept term would be, but that is
> probably just my ignorance.)
Suppose that you are 100% sure that the intercept term is zero, or so insignifantly small as not to matter. For example, if you are measuring the density of some material, and you determine a lot of pairs (mass, volume), you know that mass = density * volume, with intercept zero.

Alberto Monteiro mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Mon 21 May 2007 - 17:34:34 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 22 May 2007 - 15:31:13 GMT.

Mailing list information is available at Please read the posting guide before posting to the list.