问题如下图:
选项:
A.
B.
C.
解释:
老师你好,选项A哪里不对呢,谢谢
NO.PZ2015120604000101 问题如下 Whiof the following statements most accurately scria lognormstribution? A.The meof lognormstribution equals the mo of lognormstribution. B.The Lognormstribution's outcome cnot less thzero. C.lognormstributions have outcomes thcannot positive B is correct.The probability of a lognormally stributevariable is always greater thor equto 0. C哪里不对呢?outcome cnot less thzero可以转述为是positive的吗?还是说positive只能用于形容分布是左偏还是右偏?
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