nr Salary Gender Education con_gender con_education con_gen_x_edu 1 24 Female Degree 1 1 1 2 26 Female Degree 1 1 1 3 25 Female Degree 1 1 1 4 24 Female Degree 1 1 1 5 27 Female Degree 1 1 1 6 24 Female Degree 1 1 1 7 27 Female Degree 1 1 1 8 23 Female Degree 1 1 1 9 15 Female No_degree 1 −1 −1 10 17 Female No_degree 1 −1 −1 11 20 Female No_degree 1 −1 −1 12 16 Female No_degree 1 −1 −1 13 25 Male Degree −1 1 −1 14 29 Male Degree −1 1 −1 15 27 Male Degree −1 1 −1 16 19 Male No_degree −1 −1 1 17 18 Male No_degree −1 −1 1 18 21 Male No_degree −1 −1 1 19 20 Male No_degree −1 −1 1 20 21 Male No_degree −1 −1 1 21 22 Male No_degree −1 −1 1 22 19 Male No_degree −1 −1 1