Weike · 2024年03月08日
NO.PZ2018070201000055
问题如下：
Belen Zapata is a risk-seeking investor. He will apply utility theory to choose the investment portfolio. The table shows the expected return and expected standard deviation of several investments, assuming the measure of risk aversion is -3, he is most likely to invest:
选项：
A.
2
B.
3
C.
4
解释：
C is correct
Investment 4 has the highest Utility Value(0.3738).
E=0.5*A*Variance
=0.5*-3*(0.09)2
=0.5*-3*(0.2)2
=0.5*-3*(0.36)2
可以看一下这个公式哪不对么
NO.PZ2018070201000055 问题如下 Belen Zapata is a risk-seeking investor. He will apply utility theory to choose the investment portfolio. The table shows the expectereturn anexpectestanrviation of severinvestments, assuming the measure of risk aversion is -3, he is most likely to invest: A.2 B.3 C.4 C is correctInvestment 4 hthe highest Utility Value(0.3738). Risk Seeking就完全不管回报率了吗？
NO.PZ2018070201000055问题如下Belen Zapata is a risk-seeking investor. He will apply utility theory to choose the investment portfolio. The table shows the expectereturn anexpectestanrviation of severinvestments, assuming the measure of risk aversion is -3, he is most likely to invest:A.2B.3C.4C is correctInvestment 4 hthe highest Utility Value(0.3738). ，，，，，，，，，，，，，，，
U=E(R)-0.5*A*(stanrviation)^2 0.19-0.5*3*(0.03)^2=0.18865 0.21-0.5*3*(0.09)^2=0.19785 是我算错了吗？所有的U的结果都不对
请问根据效用函数的公式，是不是不用计算就可以判断，risk seeking investor会选方差最大的那个portfolio ？这个思路有没有什么问题？
