谢同学2022-11-19 23:13:01

基础课的module4，PPT78页的example3，Another MD joins the interview and mentions that an analyst on her team estimated a regression to explain a cross-section of returns on assets of companies using a regulation dummy variable (REG = 1 if regulated, 0 otherwise), market share (MKTSH), and an interaction term, REG_MKTSH, the product of REG and MKTSH. She notes the resulting model is RET = 0.50 – 0.5REG + 0.4MKTSH – 0.2REG_MKTSH。完全没看懂，这道题老师也没有讲。我怀疑题目中的interaction term应该是REG_MKTSH应该是REG乘以MKTSH，但还是不能理解C选项为何正确。