高顿网校CMA责任小编在此为各位考生提供考试习题练习如下，你知道答案吗？
　　Question：
　　The state of the economy has a strong effect on the expected returns for Techspace, Inc., as
　　shown below:
 
　　Given that the standard deviation (σ) of Techspace returns is 15.36% and the expected
　　rate of return is 8%, the coefficient of variation is
　　A. 1.92%
　　B. 1.23%
　　C. 1.0%
　　D. 2.36%
　　Answer（A）：
　　Answer (A) is correct. The coefficient of variation is useful when the rates of return and standard deviations of two investments differ. It measures the risk per unit of return.
　　Techspace’s is calculated as follows:
　　Coefficient of variation = 15.36% ÷ 8%
　　= 1.92%
　　Answer (B) is incorrect. This percentage results from multiplying, rather than dividing, the standard deviation and expected rate of return.
　　Answer (C) is incorrect. One is the upper limit of the value for the beta coefficient of a security.
　　Answer (D) is incorrect. This percentage is the total weighted squared variance.
　　小编寄语：意外和明天不知道哪个先来。没有危机是*5的危机，满足现状是*5的陷阱。

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