如：做一个回归
log(wage)=xx+xxedu+xxexper+xxedu*exper+u
(xxdenotes parameter)

calculate the return to education for a person with
10 years of experience and its 95% confidence interval.
怎么用Hincom指令？

运行
reg lwage edu exper edu*exper
为什么说edu*exper 找不到数据？
谢谢~