Re: st: RE: Rescaling

[Cordula Stolberg <cs32@sussex.ac.uk>]

Thanks to all of you for the useful advise on my questing regarding 
rescaling!

Cordula

--On 09 August 2004 18:35 +0100 Roger Newson <roger.newson@kcl.ac.uk> wrote:


> At 18:25 09/08/2004, I wrote:
>
> > I think what Cordula really wants might be centring, rather than
> > scaling.  If you extract a constant X_0 from an X-variate before fitting
> > the  regression model, and therefore regress Y with respect to X-X_0,
> > then the  intercept will be the expected value of Y if X==X_0, instead
> > of the  expected value of Y if X==0.
> Sorry, "extract" should of course be "subtract" here.
>
> Roger
>
> --
> Roger Newson
> Lecturer in Medical Statistics
> Department of Public Health Sciences
> King's College London
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>
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>
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