CFA偏度和峰态的问题 峰, following, positive, likely, return

gissel

NOTE book4的题，Portfolio risk and return

 

which of the following characteristics of a return distribution would most likely be associated with a low freqency of downside deviation from the mean?

 

a) kurtosis

b) fat tails

c) positive skew

 

不是特别明白问题的最后那个downside deviation的意思，答案是C。烦请大家解释一下吧！