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st: twoway function and invbinomial function

From   Maarten Buis <>
Subject   st: twoway function and invbinomial function
Date   Mon, 18 Jun 2012 10:49:18 +0200

I would have expected the two graphs from the example below to be the
same, but they are not. Can someone spot my error?

*----------------- begin example ------------------
set obs 300
range n 5e2 5e4
format n %9.0gc
gen ub = invbinomial(n,.05*n,.025)
twoway line ub n, name(gr1, replace)

twoway function ub = invbinomial(x,.05*x,.025), ///
       range(5e2 5e4) name(gr2, replace)
*------------------ end example -------------------

-- Maarten

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