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Re: st: Exogeneity Test for Tobit in STATA


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Exogeneity Test for Tobit in STATA
Date   Fri, 13 Jan 2012 11:07:39 -0500

Pattarawan Watcharaanantapong <chockyspice@gmail.com>:
You might want to look at
http://stata.com/meeting/boston10/boston10_nichols.pdf
and try out some examples in the -gmm- manual entry that are analogous
to examples for -ivregress-.

There is no simple advice on choosing a good instrument; it requires
good institutional knowledge and good econometric intuition.

On Wed, Jan 11, 2012 at 1:30 PM, Pattarawan Watcharaanantapong
<chockyspice@gmail.com> wrote:
> Hello Everyone,
>
>        I have some questions, do you know what is different between
> exogenous, endogenous, and instrument variables? and How can I choose
> variable to be instrument variable? Thank you.
>
> Tan

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