what is the .Machine$double.xmin for a 64 bit machine?

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 at wu-wien.ac.at>
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.