解
a=30-0-90
20
31.2 2
y = 90x0.48+38.8
y=82
20- )
38.8
S
300/10bou
(三) 進階題:每題9分,共27分
1. 設二組數據,2,…
.com ,,,,且
x1 + x2 + ... +x10=300 , x1? + x2? + ... +x102=10600 »
Yi+12+ ... +y1o=270/» yı? + y2 + ... +y102=7915 ,
xiyı + x3y2 + ... + x10910=8750 , * x fil y Z3 Ch.
My = 30
0 5x=4010
My = 27 6y = INTO
2. 已知有一組數據(X,Y), i=1,2,…,20,y對之最適直紹