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10. 已知變數 x 與 y 的資料散布圖如下,且變數 x 與 y 的相關係數為 r ,請問下列選項何者正確? (A) r < -1 (B) -1 < r < 0 (C) 0 <
問題詳情
10. 已知變數 x 與 y 的資料散布圖如下,且變數 x 與 y 的相關係數為 r ,請問下列選項何者正確?
(A) r < -1
(B) -1 < r < 0
(C) 0 < r < 1
(D) r > 1 。
參考答案
答案:C
難度:
適中
0.4
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不完全正相關 0 < r <1
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