問題詳情
14. 設兩變量X與Y的相關係數為 0.79﹐求變量3X +5 ﹐3- 2 Y的相關係數______。
參考答案
答案：D
難度：非常簡單0.914127
統計：A(39),B(75),C(41),D(1650),E(0)
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