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Re: st: interaction terms with regress (and logit...)
Because x1*x2 is not a variable in your dataset (and is not even a valid
name for a variable).
You can either create a new variable that is the product of x1 and x2:
generate x1Xx2 = x1*x2
and use that in your model, or learn about the -xi- command, which does
this sort of thing on the fly.
--Nick Winter
At 03:32 PM 4/7/2006, you wrote:
Dear COlleagues:
How come
logit y x1 x2 x1*x2
gives an error "variable x1*x2 not found?"
Thanks,
Larry
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--------------------------------------------------------
Nicholas Winter 607.255.8819 t
Assistant Professor 607.255.4530 f
Department of Government [email protected] e
308 White Hall falcon.arts.cornell.edu/nw53 w
Cornell University
Ithaca, NY 14853-4601
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* http://www.ats.ucla.edu/stat/stata/
