NO.PZ2023100703000080
问题如下：
The value at a node in a fixed income binomial interest rate tree is the ___ of the two possible values from the next period.选项：
A.present value B.average of the present values C.sum of the present values D.average of the future values解释：
The value at a node is the average of the present values of the two possible values from the next period. This approach reflects the probabilistic outcomes in a binomial model, where there are two possible outcomes at each node, and you're averaging the outcomes to get an expected value.
在该点产生的两个分支的数值会分比例得出PV，再相加得到该点的数值。选average of PV而不是sum是因为它在两点分别加权吗
