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Re: st: comparison between models


From   David Greenberg <dg4@nyu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: comparison between models
Date   Wed, 13 Apr 2011 17:00:28 -0400

IF you have reasons to think that both z and k influence Y, why not put them both in the model and let the data tell you what each of them contributes? David Greenberg, Sociology Department, New York University

----- Original Message -----
From: Fabio Zona <fabio.zona@unibocconi.it>
Date: Wednesday, April 13, 2011 4:58 pm
Subject: st: comparison between models
To: statalist@hsphsun2.harvard.edu


> Hi to everybody,
> 
> I have two models:
> 
> Y = a + bx + bz
> 
> Y = a + bx + bk
> 
> the only difference is the variable x (in the second model), whereas 
> in the first model I have z.
> 
> I want to see if the model with the k as indep variable is better than 
> the model with z.
> How can I test this? 
> Thanks
> 
> 
> 
> 
> 
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