Mathematics
Senior High
Resolved
為什麼一定會通過平均數兩點?
當數據x,丫未標準化時
y
(1)Y对X的迴歸直線(U-Mg)=1/(x)
y
r.
=
6x
(XrMxxyMy) ++ (Xnxx) (Y5Mb)
2
(XI-Mx) + (Xn-Mx)
(2)此迴歸直線通過平均數
(Mx, My)
x.丫”為標準化後的保表
①迴歸直線y'=re
②迴歸直線為通過漂亮且
新率為相關係數的
直絹~
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