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AW: AW: st: AW: beta coefficients for interaction terms


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   AW: AW: st: AW: beta coefficients for interaction terms
Date   Tue, 21 Apr 2009 16:34:08 +0200

<> 


How do you mean that? The example that Kit provided gives the same results?
Did you get something else for your special dataset?



HTH
Martin


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Gesendet: Dienstag, 21. April 2009 16:10
An: statalist@hsphsun2.harvard.edu
Betreff: re: AW: st: AW: beta coefficients for interaction terms

I tried it out and got different figures for the beta coefficient.  
Thats why I asked that question.
It should give me the same figures, right?

Zitat von Christopher Baum <baum@bc.edu>:

> <>
> Why don't you just try it out?
>
> sysuse auto, clear
> egen shead = std(headroom)
> egen slength = std(length)
> egen smpg = std(mpg)
> gen ia2 = shead*slength
> egen sia2 = std(ia2)
> reg smpg shead slength sia2
> reg mpg headroom length ia2, beta
>
> Kit Baum   |   Boston College Economics and DIW Berlin   |
> http://ideas.repec.org/e/pba1.html
> An Introduction to Stata Programming   |
> http://www.stata-press.com/books/isp.html
> An Introduction to Modern Econometrics Using Stata   |
> http://www.stata-press.com/books/imeus.html
>
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