Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 3 - Section 3.3 - Assess Your Understanding - Applying the Concepts - Page 163: 9

Answer

$x̅_w=3.27$

Work Step by Step

$x̅_w=\frac{Σw_ix_i}{Σw_i}=\frac{5\times3+3\times4+4\times4+3\times2}{5+3+4+3}=\frac{49}{15}=3.27$
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