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设(X,Y)为二维随机变量,则与Cov(X,Y)=0不等价的是( )
分类:
概率论与数理统计(经管类)(04183)
发表:2024年09月12日 08时09分27秒
作者:
admin
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(18)
设(X,Y)为二维随机变量,则与Cov(X,Y)=0不等价的是( )
A、X与Y相互独立
B、D(X-Y)=D(X)+D(Y)
C、E(XY)=E(X)E(Y)
D、D(X+Y)=D(X)+D(Y)
【正确答案】:A
【题目解析】:
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