[R] How does the lm() function work?

[Roger D. Peng]

lm() itself does not implement any model selection procedures.  step() 
and stepAIC() in the MASS library do.

-roger

Phillip Good wrote:
> Does the lm() function use forward, backward, stepwise or some other method of multivariable regression?  Where can I look up the details?
> 
> Phillip Good
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