clear all capture log close set more off log using chapter5.txt, text replace *** EX5.1****** use "L:\Alma Kudebayeva\Fall2017\ECN5012 Econometrics\Chapter4\eaef22.dta", clear su S ASVABC SM SF MALE tab S tab SM tab SF tab MALE tab S MALE sum S if MALE==1 sum S if MALE==0 reg S ASVABC SM SF MALE ***EX5.2********** su WEIGHT85 HEIGHT su WEIGHT85 if MALE==1 reg WEIGHT85 HEIGHT MALE gen LGWEIGHT=ln(WEIGHT85) gen LGHEIGHT=ln(HEIGHT) reg LGWEIGHT LGHEIGHT MALE test (LGHEIGHT=1) ******Ex 5.3* *********** gen LEARN=ln(EARNINGS) reg LEARN S EXP MALE gen EBARG=EXP*COLLBARG reg LEARN S EXP MALE COLLBARG EBARG *****EX 5.6*********** reg S ASVABC MALE SM SF ETHBLACK ETHHISP ****EX 5.15***************** gen MALEASVC=MALE*ASVABC reg S ASVABC MALE SM SF ETHBLACK ETHHISP MALEASVC log close