All combinations possible in a mutliple regression

Look at the leaps function in the leaps package.  It will compute the
Cp statistic which is a function of AIC.
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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All combinations possible in a mutliple regression

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