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Re: st: Heteroskedastic Probit Model


From   Mustafa Brahim <datotanseri@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Heteroskedastic Probit Model
Date   Thu, 22 Apr 2010 22:45:46 +0800

Just a matter of curiosity. How you know it is not there in the first
place? that's exactly what I want to  understand.

Cheers,

Ismail
On Thu, Apr 22, 2010 at 10:34 PM, Maarten buis <maartenbuis@yahoo.co.uk> wrote:
> --- On Thu, 22/4/10, Mustafa Brahim wrote:
>> Let me ask my question in simple way: Assuming there is no
>> problem with functional form and theory. What should I do
>> to check for heteroskedasticity in probit model?
>
> There is nothing you can do: No amount of statistical
> trickery can ever get information out of the data, that
> wasn't in there in the first place.
>
> -- Maarten
>
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
> http://www.maartenbuis.nl
> --------------------------
>
>
>
>
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