NO.PZ2022123001000032
问题如下：
The following information applies to a portfolio composed of stock A and stock B:
Which weighted portfolio has a bigger variance:
选项：
A.Equal weighted portfolio
B.Value weighted portfolio
C.The same
解释：
Equal weighted portfolio:
Value weighted portfolio:
老师好，我看答案标准差是没有加百分号，不需要加的吗
