问题如下:
Which of the following statements most accurately describe a lognormal distribution?
选项:
A.The mean of lognormal distribution equals the mode of lognormal distribution.
B.The Lognormal distribution's outcome can not be less than zero.
C.Lognormal distribution's probability of a positive value is less than 30%.
解释:
B is correct.
The probability of a lognormally distributed variable is always greater than or equal to 0.
请问C为什么是错的,因为lognormal拟合价格,所以只能是价格数字吗