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Y.K · 2021年12月03日

请问这题可以用计算器吗

* 问题详情,请 查看题干

NO.PZ202106160300002402

问题如下:

For Year 6-Year 10, the mean absolute deviation of the MSCI World Index total returns is closest to:

选项:

A.10.20% B.12.74% C.16.40%

解释:

A is correct. The formula for mean absolute deviation (MAD) is:

MDA=i=1nXiXˉnMDA = \frac{{\sum\limits_{i = 1}^n {\left| {{X_i} - \bar X} \right|} }}{n}

Column 1: Sum annual returns and divide by n to find the arithmetic mean (Xˉ{\bar X}) of 16.40%.

Column 2: Calculate the absolute value of the difference between each year's return and the mean from Column 1. Sum the results and divide by n to find the MAD.

These calculations are shown in the following exhibit:


请问这题可以用计算器吗

1 个答案

星星_品职助教 · 2021年12月03日

同学你好,

MAD的计算需要根据公式手算的。