Answer
-26.286
Work Step by Step
$SS_{xy} = Σx_{i}y{i} - \frac{ΣxΣy}{n}$
= 80 - 24(31)/7
= 80 - 106.2856
= -26.286
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 11 - Simple Linear Regression - Exercises 11.11 - 11.31 - Learning the Mechanics - Page 561: 11.14b
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