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Re: st: interaction effect


From   "Michael N. Mitchell" <Michael.Norman.Mitchell@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: interaction effect
Date   Wed, 09 Jun 2010 10:30:30 -0700

Dear Riyadh

It depends on whether you are interacting two categorical variables, a categorical and continuous variable, or two continuous variables. Regardless, I think you can find some useful information at

http://www.ats.ucla.edu/stat/stata/faq/

  and see the questions about graphing interactions.

Also, although it is getting "out of date", you can consider "xi3" combined with "postgr3" as illustrated at

http://www.ats.ucla.edu/stat/stata/ado/analysis/postgr3.htm

Best luck,

Michael N. Mitchell
Data Management Using Stata      - http://www.stata.com/bookstore/dmus.html
A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
Stata tidbit of the week         - http://www.MichaelNormanMitchell.com



On 2010-06-09 10.08 AM, riyadh shamsan wrote:
I am trayn to visualize the an interaction effect in a linear model? any ideas?

Riyadh
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