英国统计学家Karl Pearson提出了一个测定两指标变量线性相关的计算公式,通常称为积矩相关系数,它用公式表示为()。

A.<img src='https://img2.soutiyun.com/shangxueba/ask/3735001-3738000/3735445/ct_zyzqfxj_zyzqfxchoose_00328(20099)1.jpg' /> B.<img src='https://img2.soutiyun.com/shangxueba/ask/3735001-3738000/3735445/ct_zyzqfxj_zyzqfxchoose_00328(20099)2.jpg' /> C.<img src='https://img2.soutiyun.com/shangxueba/ask/3735001-3738000/3735445/ct_zyzqfxj_zyzqfxchoose_00328(20099)3.jpg' /> D.<img src='https://img2.soutiyun.com/shangxueba/ask/3735001-3738000/3735445/ct_zyzqfxj_zyzqfxchoose_00328(20099)4.jpg' />

时间:2023-02-05 11:53:32

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