Re: [R] Step wise regression

From: Paul DeBruicker <pdebruic_at_gmail.com>
Date: Thu 05 May 2005 - 02:06:25 EST

Hi Walmir,

Here is the long version of Frank Harrell's answer.

http://www.pitt.edu/~wpilib/statfaq/regrfaq.html

Paul

On Tue, 2005-05-03 at 08:21 -0500, Frank E Harrell Jr wrote:
> walmir-rodrigues wrote:
> > Dear Fellows,
> >
> > How can I do to proced a step wise regression in R, if itīs possible ?
> >
> > Thanks,
> >
> > Walmir
>
> Here is an easy approach that will yield results only slightly less
> valid than one actually using the response variable:
>
> x <- data.frame(x1,x2,x3,x4,..., other potential predictors)
> x[,sample(ncol(x))]
>
> :-) -Frank
>
>



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