Basic Statistics: Tales of Distributions 10th Edition

Published by Cengage Learning
ISBN 10: 0-49580-891-1
ISBN 13: 978-0-49580-891-6

Chapter 3 - Exploring Data: Central Tendency - Problems - Page 52: 3.10

Answer

The 3 sets of batting average data cannot be combined by adding the 3 values and dividing by 3.

Work Step by Step

in each of 3 years, he had different at-bats, and therefore, we must calculate a weighted average in order to calculate his 3-year batting average correctly.
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