三种平均数(算术平均,几何平均以及调和平均)

本文内容截取自该Quora答案

The arithmetic mean:
The arithmetic mean is best used when the sum of the values is significant.
The geometric mean:
The geometric mean is best used when the product of the values is significant.
【三种平均数(算术平均,几何平均以及调和平均)】The harmonic mean:
The harmonic mean is particularly sensitive to a single lower-than average value. (调和平均值对单个低于平均值的值特别敏感。)

    推荐阅读