I use a 32 bit machine. For those using 64 bit machines,

what is the .Machine$double.xmin for for machines?

regards. Stephen.




----- Original Message -----
From: Achim Zeileis <Achim.Zeileis@(protected)>
Date: Tuesday, July 12, 2005 10:51 am
Subject: Re: [R] exact values for p-values - more information.

> On Tue, 12 Jul 2005, S.O. Nyangoma wrote:
>
> > > If they have the same degrees of freedom, use the test statistic
> > > and not
> > > the p value for comparing them.
> > > Z
> >
> > I appretiate your input to this discussion. Do you know of a
> reference> to your statement above?
>
> ?? Any basic statistics book? Distribution functions tend to be
> monotonous.
>
> > I had actually used the test-statistic which in my case is r-
squared
> > to compare them. This is in my view was adequate but I also
> think it
> > is more convincing to say something about the p-values
>
> Not really `more' convincing, it's all pretty equivalent when the
> numberof estimated parameters is the same. You can also compare
> the fitted
> models via their associated residual sum of squares which I would
find
> most intuitive because that is the objective function you are
> trying to
> minimize via OLS.
> Z
>
> > (difficulties
> > in computing them, and hence the rationale of solely using the
> test-
> > stat).
> >
> > regards. Stephen.
> >
> >
> >
>

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