[R] All combinations possible in a mutliple regression

[Greg Snow]

Look at the leaps function in the leaps package.  It will compute the
Cp statistic which is a function of AIC.

On Thu, Aug 9, 2012 at 7:28 AM, zel7223 <jmichel.fortin at hotmail.fr> wrote:
> Hi,
>
> I want to use four independent variables to predict the output of one
> dependent variable using a linear model lm. I want to compare all possible
> combinations of the 4 independent variables, including singles, pairs and
> triples.
>
> I was thinking of using the AIC test to compare all models and pick the best
> one.
>
> The model looks like this :
>
> lm(Y ~ X1 + X2 + X3 + X4)
>
> Thanks for your help
>
> Cheers
>
> Jean-Michel Fortin
> UOttawa
>
>
>
> --
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>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com