clear
webuse set "http://rlhick.people.wm.edu/econ407/data"
webuse tobias_koop 

* First, I will arbitrarily make this a cross section in time 4

keep if time==4

sum

*  variabe     position
*	id			1
*	educ		2
*	ln_wage		3
*	pexp		4
*	time		5
*	ability		6
*	meduc		7
*	feduc		8
*	broken_home	9
*	siblings	10
*	pexp2		11
*	period		12

* simple OLS regression

regress ln_wage educ pexp pexp2 broken_home, robust

regress ln_wage educ pexp pexp2 broken_home, vce(bootstrap) 

*
*  Bootstrap with Panel Data !!!
*
*

clear

webuse set "http://rlhick.people.wm.edu/econ407/data"
webuse tobias_koop 
xtset id time
*  variabe     position
*	id			1
*	educ		2
*	ln_wage		3
*	pexp		4
*	time		5
*	ability		6
*	meduc		7
*	feduc		8
*	broken_home	9
*	siblings	10
*	pexp2		11
*	period		12

* Fixed Effects Robust Regression

xtreg ln_wage educ pexp pexp2, fe vce(bootstrap)