Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 13 - Nonparametric Statistics - 13-3 Wilcoxon Signed-Ranks Test for Matched Pairs - Basic Skills and Concepts - Page 654: 3


See below.

Work Step by Step

The sign test only used the sign of the differences, but the Wilcoxon signed-rank test also takes into consideration the rank of the differences.
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