Hello, all:
I'm running an example given by Wooldridge,Introductory Econometrcs (2nd)
pp513, the code and data is as follows:
use http://fmwww.bc.edu/ec-p/data/wooldridge/JTRAIN
tsset fcode year
sort fcode year
drop if year==1989
ivreg D.lscrap (D.hrsemp = D.grant)
Then I want to run ivreg, I used the following:
iis fcode
tis year
xtivreg scrap d88 (hrsemp=grant), fe
But I got different results, could anybody tell me what am I doing wrong?
Thanks a lot,
Gang
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