問題詳情
49. 以簡單線性迴歸方程式描述「自變數 x」與「應變數 y」的關係，收集 4 筆數據資料進行分析，得到x與y的平均數分別為10和90。若此方程式之斜率(slope )為5，試問：當x的值為12時，y的平均值為何？
(A) 100
(B) 110
(C) 120
(D) 130
(A) 100
(B) 110
(C) 120
(D) 130
參考答案
無參考答案
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