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Re: st: rho in biprobit


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: rho in biprobit
Date   Tue, 18 Nov 2008 14:04:23 +0000 (GMT)

--- Nirina F <fstata@gmail.com> wrote:
> In my biprobit I get rho=0.6 and 0.7 and then to 3.
> I thought that rho has to be between -1 and 1. Am I right?
> What is the econometric meaning of this rho being 3 then?   If this
> is nonsense then why does Stata runs and give that result anyway?

Looks to me that you are looking at /athrho instead of rho. /athrho is
the Fisher's z transformed rho, and can range from minus infinity to
plus infinity.

-- Maarten


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      
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