<>
For these purposes, Scott Long`s -findit spost- comes in handy. Of course,
Long and Freese (2006), http://www.stata-press.com/books/regmodcdvs.html, is
the canonical reference for what you are trying to achieve. Try this:
*************
sysuse auto, clear
prob for price mpg rep78 /*
*/ headroom trunk weight
ins mpg
loc uniq= r(N_unique)
su mpg, mean
prgen mpg, from(`r(min)') /*
*/ to(`r(max)') /*
*/ gen(prob) n(`uniq')
tw (connected probp1 probx)
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Nirina F
Gesendet: Donnerstag, 17. September 2009 13:41
An: [email protected]
Betreff: st: why is this graph all over the place?
Dear all,
I would like to graph the predicted probabilities of having foreign
against mpg in order to highlight the slope(basically the marginal
effects) at each value of mpg.
I run the following but it is all over the place because I think it is
giving me the predicted probabilities from different variables.
Could you help me in this please. also if you could help me graph the
marginal effects of mpg from this probit equation against each value
of mpg.
probit foreign price mpg rep78 headroom trunk weight
predict pmpg, p
sort mpg
twoway line pmpg mpg
Thank you veyr much,
N
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