问题如下图:
为什么x不能代入1得出y等于0.6624percent
选项:
A.
B.
C.
解释:
NO.PZ201512020300000203 “the CPIENG creases 1.0 percent”的意思应该是CPIENG减少了1%吧?答案的算法怎么看着是CPIENG现在的值就是1%呢?
0.0138 (1.38 percent). 0.0203 (2.03 percent). C is correct. From the regression equation, Expectereturn = 0.0138 + -0.6486(-0.01) = 0.0138 + 0.006486 = 0.0203, or 2.03 percent.请问此处的计算为什么不需要考虑残差项?