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2. 下列 5 個散布圖中﹐若 X 與Y 的相關係數由左至右依序分別為 ﹐ ﹐ ﹐ ﹐ ﹐則下列何者正確﹖ (A)r2 最小 (B)r5 最大 (C)r4=r5 (D) r2=r5 (E)r3 >
問題詳情
2. 下列 5 個散布圖中﹐若 X 與Y 的相關係數由左至右依序分別為 ﹐ ﹐ ﹐ ﹐ ﹐則下列何者正確﹖
(A)r2 最小
(B)r5 最大
(C)r4=r5
(D) r2=r5
(E)r3 >r5﹒
參考答案
答案:D
難度:非常困難0
統計:A(0),B(0),C(0),D(0),E(0)
用户評論
【
cjy903126
】評論
r1為中度正相關 0.3<=r1<=0.7r2為零相關 r2=0
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