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Olivia.W🌸 · 2024年06月26日

utility function

NO.PZ2015121801000056

问题如下:

A financial planner has created the following data to illustrate the application of utility theory to portfolio selection:

If an investor’s utility function is expressed as U=E(r) 1 2 A σ 2 and the measure for risk aversion has a value of 2, the risk-averse investor is most likely to choose:

选项:

A.

Investment 1.

B.

Investment 2.

C.

Investment 3.

解释:

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.

不是U越小,越risk adverse吗?怎么选了U最大的?

1 个答案

Kiko_品职助教 · 2024年06月26日

嗨,努力学习的PZer你好:


理性人追求的都是最大的utility,无论他们对于风险的偏好是什么样的。所以就选Utility爽度最大的。

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Investment 2. Investment 3. B  is correct. Investment 2 provis the highest utility value (0.1836) for a risk-averse investor who ha measure of risk aversion equto 2. 请问老师这个题的解题思路就是根据效用函数选一个效用最大的组合,不用考虑到底是风险厌恶还是风险偏好或是风险中性对吗?

2021-01-30 17:05 1 · 回答

老师好,想问下这种题为什么都要代入公式呢如果厌恶风险为什么不选择sigma最小的就好了呢,还是因为风险厌恶的人可以承担风险只不过相应的要得到更多的收益所以进行utility的比较吗,谢谢

2020-07-19 05:35 2 · 回答