[R] Stepwise Regression with no Origin

From: Zd Gibbs <zd.gibbs_at_yahoo.com>
Date: Tue, 12 Apr 2011 12:52:05 -0700 (PDT)


Sorry, the first version was incomplete. I'm trying again.

I am running a regression equation and i want to enter in 12 IV then stepwise enter 8 variables and not have an origin.  

DV is "shfl".
I  want to enter in the following 12 independent dummy variables ajan
bfeb
cmar
dapr
emay
fjun

And then I want to enter in a stepwise fashion slag6
slag7
slag8

slag9
slag10
slag11
slag12

And finally, I want there to be no origin.

I've done simple regression, but nothing quite like this.

I would appreciate your help.

Thanks

Zeda

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