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Re: st: Stata Inbuilt commands


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Stata Inbuilt commands
Date   Wed, 7 Oct 2009 07:37:40 -0700 (PDT)

--- On Wed, 7/10/09, vmz@vol.net.mt wrote:
> how would you get the implicid Stata commands ,such as :
> drop _all
> set obs 100
> gen a = invnorm(uniform())

As Martin already said, there is no way in which you can
see what in-built commands do. Based on your previous 
questions I suppose that you are primarily interested in
what the -invnormal()- function does. It returns the 
inverse cumulative standard normal distribution. As you
know there is no closed form solution to that integral, 
so my guess is that it either looks up values from an
internally stored table, or it uses some approximation
formula.

-- Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://www.maartenbuis.nl
--------------------------

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