[单选题]以下关于相关系数r的取值中，被称为变量x和y不相关是（ ） 。
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2023-11-01 15:17:52|
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[单选题]以下关于相关系数r的取值中，被称为变量x和y不相关是（ ） 。
A.|r|=0
B.0.3<|r|< 0.5
C.0.8<|r|<1
D.0.5<|r|< 0.8
A.|r|=0
B.0.3<|r|< 0.5
C.0.8<|r|<1
D.0.5<|r|< 0.8
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