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Re: st: goodness of fit measure fir ivtobit
From
Austin Nichols <[email protected]>
To
[email protected]
Subject
Re: st: goodness of fit measure fir ivtobit
Date
Sat, 22 Sep 2012 22:49:29 -0400
Anat (Manes) Tchetchik <[email protected]>:
You can always -predict- and compute the squared correlation of
predictions with observed values:
http://www.stata.com/support/faqs/statistics/r-squared/
but are you sure your -ivtobit- model is justified? What is the
process that results in observations being censored? I suspect you
have a lower limit at zero which is actually a very low conditional
mean rounded down to zero--am I right? You may be better off with a
-gmm- model.
On Sat, Sep 22, 2012 at 5:33 PM, Anat (Manes) Tchetchik
<[email protected]> wrote:
> Dear statalisters,
>
> I wonder if anyone knows any goodness of fit that is appropriate for
> tobit with endogenous
> variables (ivtobit). Not as in "regular" tobit, stata does not report any
> goodness of fit measure, any idea how to estimate such a measure?
> Any response will be greatly appreciated..
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