CHAPTER 11
Section 11-2
11-1. a) yi= β0 + β1xi+ 
i
b) ŷ = 
0 + 1x
ŷ = 48.012962−2.3298017(4.3)
= 37.99
c) ŷ = 48.012962−2.3298017(3.7) = 39.39
d) e = y − ŷ = 46.1 − 39.39 = 6.71
11-3. a) Regression Analysis: Rating Pts versus Yds per Att
The regression equation is
Rating Pts = 14.2 + 10.1 Yds per Att
Predictor Coef SE Coef T P
Constant 14.195 9. 059 1.57 0.128
Yds per Att 10.092 1.288 7.84 0.000
S = 5.21874 R-Sq = 67.2% R-Sq(adj) = 66.1%
Analysis of Variance
Source DF SS MS F P
Regression 1 1672.5 1672.5 61.41 0.000
Residual Error 30 817.1 27.2
Total 31 2489.5
yi = β0 + β1xi+i
b) ŷ =14.2+10.1(7.5) = 89.95
c) −1 = −10.1
d)
e) ŷ = 14.2 + 10.1(7.21) = 87.02 ...
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