NO.PZ2017092702000103
问题如下:
The lognormal distribution is a more accurate model for the distribution of stock prices than the normal distribution because stock prices are:
选项:
A.symmetrical.
B.unbounded.
C.non-negative.
解释:
C is correct.
A lognormal distributed variable has a lower bound of zero. The lognormal distribution is also right skewed, which is a useful property in describing asset prices
是不是老师讲到的国内股票有一个涨跌幅度的限制呀?