题目
Which of the following statements least accurately describes one of the fundamental multiple regression assumptions?
选项
A.The error term is normally distributed.
B.The variance of the error terms is not constant (i.e., the errors are heteroskedastic).
C.The independent variables are not random.
D.There is no exact linear relationship between any two or more independent variables.
答案
B
解析
The variance of the error term IS assumed to be constant, resulting in errors that are homoskedastic.误差项IS的方差假定为常数，导致误差为同方差。