[R] Force regression line to a 1:1 relationship

John Fox jfox at mcmaster.ca
Wed Sep 14 20:01:46 CEST 2011

Dear S.,

On Wed, 14 Sep 2011 16:48:55 +0100
 S Ellison <S.Ellison at LGCGroup.com> wrote:
> > From: John Fox [mailto:jfox at mcmaster.ca] 
> > Subject: Re: [R] Force regression line to a 1:1 relationship
> > If I understand correctly what you said, a plot of residuals 
> > against an X is not an added-variable plot. An added variable 
> 'Added variable plots' was the phrase used by the previous poster, and the description was also theirs, not mine. I intended only to draw attention to the fact that a-v plots are available in car - and thank you for putting them there! - as the previous poster hadn't mentioned the fact. 
> I confess that I did not check the description given by the previous poster  before doing so. You're quite right; as written it does not correspond to the usual meaning of the term.
> Apologies if I contributed to a confusion...

And I apologize for incorrectly attributing the erroneous definition of AV plots (as was also pointed out to me by David Winsemius).


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