1. Discuss the findings and evaluate the models

Models Summary Dependent variable: Lwage OLS instrumental variable (1) (2) (3) (4) educ 0. 109* 0 . 061 0. 059 3. 061+ (0. 014) (0. 031) (0. 035) (0.031) exper 3. 044* 9.044* * (0. 013) (0.013) expersq -0. 001* * -0. 001* * (0. 0004) (0. 0904) Constant -0.185 0.048 0.441 0.048 (0.185) (0. 460) (0. 446) (0. 409) Observations 428 428 428 428 RZ 0.118 0.136 0. 093 0.136 Adjusted R2 0. 116 0.130 0. 091 0.130 Residual Std. Error 0.680 (df = 426) 0.675 (df = 424) 0.689 (df = 426) 0.675 (of = 424) F Statistic 56. 929*** (of = 1; 426) Note : *p