The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 1-46414-253-X
ISBN 13: 978-1-46414-253-6

Chapter 7 - Exploring Data: Part I Review - Test Yourself - Page 193: 7.36a

Answer

$b = r\frac{s_{y}}{s_{x}} = (0.448)\frac{8.69}{0.045} = 86.5138$ a = ȳ - bx̄ = 65.90 - 86.5138 (0.649) = 9.7525 General least square regression line is: ŷ = a + bx = 9.7525 + 86.5138x

Work Step by Step

$b = r\frac{s_{y}}{s_{x}} = (0.448)\frac{8.69}{0.045} = 86.5138$ a = ȳ - bx̄ = 65.90 - 86.5138 (0.649) = 9.7525 General least square regression line is: ŷ = a + bx = 9.7525 + 86.5138x
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