SOLUTION: 4. A company recruits personnel for its sales department on the basis of special tests designed to judge the potential of the candidates. The following table gives test scores and

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Question 359724: 4. A company recruits personnel for its sales department on the basis of special tests designed to judge the potential of the candidates. The following table gives test scores and the mean daily sales for 9 executives.
a. Fit a regression line of Y on X.
b. Prepare a table of predicted values and residuals.
Mean daily Score(Y)
34 39 30 33 36 38 45 41 48
Test Score (X)
59 69 50 56 64 66 77 73 83

Answer by Fombitz(13828) About Me  (Show Source):
You can put this solution on YOUR website!

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x%5Bave%5D=38.22
y%5Bave%5D=66.33
SSXX=267.56
SSYY=876
SSXY=480.33
b1=SSXY%2FSSXX=1.795
b2=SSXY%2FSSYY=0.548
r%5E2=b1%2Ab2=0.984
r=0.992
a=y%5Bave%5D-b1%2Ax%5Bave%5D=-2.286
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highlight_green%28y=-2.286%2B1.795x%29
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