問題詳情
13. 已知散佈圖 A 中，共有 n 個坐標點：(x1 ,y2 ),(x2 ,y2 ),......,(xn ,yn ) ，其中 x 坐標的算術平均數μx＝標準差σx＝2，y 坐標的算術平均數μy＝8，標準差σy＝8，且相關係數 r( x , y)＝0.75。若在散佈圖 A 中新增一筆資料(4,8)，求此 n+1筆資料之 y 對 x 的迴歸直線方程式為_________。
參考答案
答案：C
難度：簡單0.819537
統計：A(284),B(389),C(3188),D(29),E(0) #
個人：尚未作答書單：人民自由及權利之保障&人民自由及權利之限制、刑法第二百三十九條對通姦、相姦者處以罪刑，是否違憲？、釋字第 554 號
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