Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 3 - Data Description - Chapter Quiz - Page 182: 24


a. Mean 6.4 b. Modal class 6–8 c. Variance 11.6 d. Standard deviation 3.4

Work Step by Step

a. Mean 6.4 (find midpoints of each class, use frequency and group data formula) b. Modal class 6–8 (class with highest frequency) c. Variance 11.6 (calculate with a formula) d. Standard deviation 3.4 (square root of variance)
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