*
* Example 7.5 on page 226
*
open data wage1.raw
data(format=free,org=columns) 1 526 wage educ exper tenure nonwhite female married numdep smsa northcen south west construc ndurman trcommpu trade services profserv profocc clerocc servocc lwage expersq tenursq
*
* These show how to create the squared series
*
set expersq = exper**2
set tenursq = tenure**2
*
linreg lwage
# constant female educ exper expersq tenure tenursq
*
* Calculation of exact percentage change. The coefficient on the female dummy is
* %beta(2).
*
disp exp(%beta(2))-1