colgpa is cumulative college grade point average,

hsize is size of high school graduating class, in hundreds,

hsperc is academic percentile in graduating class,

sat is combined SAT score,

female is a binary gender variable, and

athlete is a binary variable, which is one for student-athletes.

(colgpa) = 1.19-0.02*hsize-0.01*hsperc+0.00*sat+0.16*female+0.17*athlete

Interpret the coefficient on athlete?

colgpa= 2.99-0.02*hsize-0.02*hsperc+0.60*female+0.01*athlete

What is now the estimated effect of being an athlete?