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st: interaction graph

From   Fabio Zona <[email protected]>
To   [email protected]
Subject   st: interaction graph
Date   Sat, 22 Jan 2011 19:16:27 +0100 (CET)

dear statalist,

I have this model:

Y = controls + X  + X^2   + DUMMY  +  X*DUMMY  + X^2 * DUMMY

That is, a quadratic relation (X and X^2) is moderated by a dummy variable.

I need to graph the two curves, to show the interaction effect. How can I do this in Stata?


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