mean return/ geometric mean return

问题如下：

Given a dataset of annual investment returns for a fund over the last five years, what is the most appropriate measure to represent the average return?

选项：

A.

Mean return

B.

Median return

C.

Geometric mean return

解释：

If we want to estimate the average returns over more than one period, we should use the geometric mean of returns because the geometric mean captures how the total returns are linked over time. This method reduces the impact of extreme values and provides an accurate average return.