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云烟2023 · 2023年01月24日

考试会出现这么繁琐的计算吗？

  1. FRM I
  2. Quantitative

NO.PZ2020010302000009

问题如下：

Consider the following data on a discrete random variable X:

a. Calculate the mean and variance of X.

b. Standardize X and check that the mean and variance of X are 0 and 1 respectively.

c. Calculate the skew and kurtosis of X.

解释：

a. The mean is -0.803 and the variance is 6.762.

b.



c.



Hence, the skew of X is -0.581 and the kurtosis of X is 2.773.








​考试会出现这么繁琐的计算吗？

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李坏_品职助教 · 2023年01月24日

嗨，努力学习的PZer你好：


不可能考这些计算的，最多也就算一两个变量的standardized value。

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虽然现在很辛苦，但努力过的感觉真的很好，加油！

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