NO.PZ2021061603000038
问题如下:
Homoskedasticity is best described as the situation in which the variance of the residuals of a regression is:
选项:
A.zero B.normally distributed C.constant across observations解释:
C is correct. Homoskedasticity is the situation in which the variance of the residuals is constant across the observations.
请问B为什么不对?如果是 Constant,就不可能Normal Distribution,是同一个常量就不应该变化吧。