问题
单项选择题
The mean and standard deviation of returns for Stock A is represented below.（）
A．0.4
B．0.3
C．0.2
答案
参考答案：A
解析：
CV = Standard Deviation/Mean =(8/20)=.
搜题请搜索小程序“爱下问搜题”
The mean and standard deviation of returns for Stock A is represented below.（）
A．0.4
B．0.3
C．0.2
参考答案：A
解析：
CV = Standard Deviation/Mean =(8/20)=.