题目
If the variable (Y) is a normal random variable, such than 「huixue_img/importSubject/1564169387177545728.png」, which of the following (X) variables is lognormally (log-normally) distributed?
选项
A.X=e^Y
B.X = LN(Y)
C.X = Y(1) + Y(2) + ...Y(n)
D.X = LN[Y(2)/Y(1)]
答案
A
解析
If (Y) is N(.), then「huixue_img/importSubject/1564169387584393216.png」 is lognormal.