紫同学2018-01-15 20:41:55

22. If an investor’s utility function is expressed as U=E(r)−12Aσ2 and the measure for risk aversion has a value of 2, the risk-averse investor is most likely to choose: A. Investment 1. B. Investment 2. C. Investment 3. B is correct. Investment 2 provides the highest utility value (0.1836) for a risk-averse investor who has a measure of risk aversion equal to 2. Investment Expected Return (%) Expected Standard Deviation (%) Utility A = 2 1 18 2 0.1796 2 19 8 0.1836 3 20 15 0.1775 4 18 30 0.0900 麻烦老师讲解一下，为什么我计算的U值，与答案不一样呢？