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SYc · 2023年11月18日

这个题c为什么不对

  1. CFA I
  2. Quantitative

NO.PZ2023052302000005

问题如下：

Which of the following statements regarding arithmetic and geometric means is correct?

选项：

A.

The geometric mean will exceed the arithmetic mean for a series with non-zero variance

B.

The geometric mean measures an investment’s compound rate of growth over multiple periods.

C.

The arithmetic mean measures an investment’s terminal value over multiple periods.

解释：

B is correct. The geometric mean compounds the periodic returns of every period, giving the investor a more accurate measure of the terminal value of an investment.

算数平均数的定义是什么呢，有原版书的解释吗

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2 个答案

星星_品职助教 · 2023年11月19日

@SYc

算数平均的定义就是把所有的数都加起来，然后除以数量n。实则就是讲义里给的这个公式。

文字描述比较简单直白，就没有单独又列一遍。想看的话可参考原回复里的教材定义截图。

星星_品职助教 · 2023年11月19日

同学你好，

1）衡量多期投资终值所使用的平均数是几何平均，算数平均无法得到包含本息的终值；

2）算数平均教材定义如下：

SYc · 2023年11月19日

老师，讲义里面没有看到arithmetic 的定义呢

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