log using wagepan.log, replace

clear
set memory 40m
set more off
set matsize 350

use wagepan, clear
*tsset nr year

iis nr
tis year

xtreg  lwage  educ black hisp exper expersq married union, fe
estimates store fixed

regress  lwage  educ black hisp exper expersq married union

xtreg  lwage  educ black hisp exper expersq married union, re
estimates store random

hausman fixed random
hausman  random fixed

xttest0