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Re: st: Re: interpretation of mfx


From   "Joao Ricardo F. Lima" <jricardofl@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: interpretation of mfx
Date   Fri, 20 Jun 2008 10:56:28 -0300

Thanks Kit for this clarification!


2008/6/20 Kit Baum <baum@bc.edu>:
> < >
> With a caveat: if the right-hand variable is an indicator, or dummy
> variable, mfx will by default give you the effect of changing 0 to 1, and
> indicate same on the output. This is not an infinitesimal change in the
> variable, as that makes no sense for an indicator variable.
>
> Kit Baum, Boston College Economics and DIW Berlin
> http://ideas.repec.org/e/pba1.html
> An Introduction to Modern Econometrics Using Stata:
> http://www.stata-press.com/books/imeus.html
>
>
> On Jun 20, 2008, at 02:33 , Maarten wrote:
>
>> - -mfx- will give you the first derivative, that is, the slope at a
>> choses value of x, while -margeff- will compare two points on the curve
>> one unit apart around that value. So -margeff- will give a discrete
>> approximation of the derivative.
>
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>



-- 
-------------------------------
Joao Ricardo Lima
Professor
UFPB-CCA-DCFS
+553138923914
-------------------------------
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