Question: DATA: CTract P_HSgrad P_trades P_collcert P_univdipl P_univdegr Popn MedInc AvgInc StdErr MedI… DATA: CTract P_HSgrad P_trades P_collcert P_univdipl P_univdegr Popn MedInc AvgInc StdErr MedInc_4 1.01 0.286285 0.065246 0.185087 0.050599 0.221039 3195 19977 25089 788 19977 1.04 0.248148 0.07037 0.155556 0.037037 0.407407 1465 30098 37886 2018 30098 1.05 0.191558...