题目
A distribution of returns that has a greater percentage of small deviations from the mean and a greater percentage of extremely large deviations from the mean:
选项
A.is positively skewed.
B.is a symmetric distribution.
C.has positive excess kurtosis.
D.has negative excess kurtosis.
答案
C
解析
A distribution that has a greater percentage of small deviations from the mean and a greater percentage of extremely large deviations from the mean will be leptokurtic and will exhibit excess kurtosis (positive). The distribution will be taller and have fatter tails than a normal distribution. 一个分布如果有很大百分比的比均值较小偏差，而同时也有很大百分比的比均值大很多的偏差，那么这个分布是尖峰的，并且将显示出正峰度。该分布将比正态分布更高并且尾部更肥。