问题如下:
If the return process for 100 firms is a four-factor market model, then the number of parameters to be estimated is
选项:
A. 6
B. 100
C. 286
D. 406
解释:
D is correct. 406.
The number of parameters to be estimated is
MN + M(M - 1 )/2 for M common factors and N firms.
这个知识点好像没讲啊?