NO.PZ202109130200003903
问题如下：
The interpretation of the slope is the:
选项：
A. change in the annual growth rate of the money supply per year
B. average annual growth rate of the money supply after the shift in policy
C. difference in the average annual growth rate of the money supply from before to after the shift in policy
解释：
C is correct. Whereas the intercept is the average of the dependent variable when the indicator variable is zero (that is, before the shift in policy), the slope is the difference in the mean of the dependent variable from before to after the change in policy.
老师，关于这道大题，不是特别理解该如何做选择和判断。答案只给了结果也没有给分析过程，可以帮忙解析一下吗。谢谢