Given the following regression output, interpret the coefficient on $S$ and discuss the

relationship between schooling and EARNINGS. Note that the dependent variable is

the natural log of the wage $($LGEARN$),$ and the regression includes an interaction

term between years of schooling and age $($SAGE$).$

gen LGEARN$=$ln $($EARNINGS$)$

gen SAGE$=$S$*$AGE

regress LGEARN S EXP AGE SAGE