tag:blogger.com,1999:blog-6288862798546085706.post4018470421194702622..comments2024-02-08T03:39:11.256-05:00Comments on Econometrics By Simulation: Interpreting the Control Function CoefficientFrancishttp://www.blogger.com/profile/16658586705916884436noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6288862798546085706.post-50441486975927677512013-02-22T09:52:45.024-05:002013-02-22T09:52:45.024-05:00From memory all the Wooldridge text book says is t...From memory all the Wooldridge text book says is that the test of the coefficient equal to zero is an endogeneity test. Also as you probably know you can see the square of this coefficient's t-statistic is approx the Wu-Hausman chi-squared test statistic from:<br /><br /> ivregress 2sls y (w=z)<br /> estat endog<br /><br />Best wishes,<br /> Tom PalmerAnonymousnoreply@blogger.com