Dear listers,
I am learning STATA programming. The following
question seems very basic, but I wasted much time
debugging it and failed to get through.
I copied the following codes exactly from somewhere,
but I can not get it running in STATA 8.1. What's the
problem?
Thank you very much for your attention.
_____________________________
set seed 10101
program define simrandm
version 6.0
if "`1'"=="?" {
global S_1 "b_const se_const b_slope
se_usual se_white"
exit
}
drop _all
set obs 20
gen x = invnorm(uniform())
gen u = x*invnorm(uniform())
gen y = 1+1*x + u
regress y x, robust
scalar sewhite=_se[x]
regress y x
post `1' (_b[_cons]) (_se[_cons]) (_b[x])
(_se[x]) (sewhite)
end
simul simrandm, reps(1000)
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