问题如下:
Given the table above, compared with a normal distribution, the distribution of returns for Stock A is most likely to:
选项:
A.have the same kurtosis.
B.be more peaked.
C.have thinner tails.
解释:
B is correct. Excess kurtosis is positive means kurtosis is larger than 3 and the return distribution is more peaked than normal distribution.
B 为啥不对啊?Skewness 如果不是 0,不管是正的还是负的,不是应该朝左或者朝右扭曲了么?这样的扭曲会造成thinner tail?