pause on
use Vote1
reg voteA shareA
pause
predict votehat
scatter voteA votehat shareA, c(. l) s(+ i)
pause on
clear
use CEOSAL1
reg salary roe	
pause
predict salhat
scatter salary salhat roe, c(. l) s(+ i)
clear
use airfare
reg fare dist
pause
predict farehat
scatter fare farehat dist, c(. l) s(+ i)