What fraction of the wage gap between Group A and Group B is unexplained by differences in schooling?
10%
80%
20%
50%

 

Wage Weekly 1,300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 0 1 2 Group A: slope 50 Group B: stope = 33 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Years of School