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st: question regarding nl

From   "Harald Badinger" <[email protected]>
To   [email protected]
Subject   st: question regarding nl
Date   Wed, 29 Oct 2003 13:51:25 +0100

Hi there,
does anyone know how to interpret standard errors of 0 for part of 
the coefficients in the nonlinear least sqaures output.

Actually, the estimation output does not report standard errors, t-
and p- values for some of the parameters; however, looking at the 
standard errors using the _se[]command or the e(V) command, the 
values displayed are "0".
(I guess the opposite is true: that the standard errors are extremely 

Thanks for your help in advance,
best regards!
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