问题 单项选择题

An analyst does research about common probability distributions. Compared to a normal distribution, a return distribution with negative excess kurtosis most likely has :()

A. more extreme outcomes.

B. less observations clustered around the mean.

C. a longer tail on the left side than on the right side.

答案

参考答案:B

解析:

本题考查的是对偏度(skewness)和峰度(kurtosis)的基本理解。如果收益率分布是比正态分布要尖峰的话,那么一般是厚尾,有更多的观察值分布在均值附近;如果比正态分布要扁峰的话,那么一般是薄尾,有更少的观察值分布在均值附近,同时有更少的极大或极小值。左边或右边厚尾与偏度有关。

单项选择题
判断题