假设一位投资者关心的某项商业项目可能有三个前景——其概率与回报如下表所示。这项不确定性投资
假设一位投资者关心的某项商业项目可能有三个前景——其概率与回报如下表所示。
这项不确定性投资的期望收益、方差各是多少?
Suppose an investor is concerned about a business choice in which there are three prospects -the probability and returns are given below:
What is the expected value of the uncertain investment? What is the variance?