问题
单项选择题
If Stock X's expected return is 30 percent and its expected standard deviation is 5 percent, Stock X's expected coefficient of variation is:（）
A. 0.167.
B. 1.20.
C. 0.833.
答案
参考答案：A
解析：
The coefficient of variation is the standard deviation divided by the mean: 5/30 =0.167.