Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 12 - Statistics - 12.2 Measures of Central Tendency - Exercise Set 12.2 - Page 793: 70

Answer

mean

Work Step by Step

It cannot be the median because that would be the middle value and thus $(411-1)/2=205$ people would earn more than that, thus it is the mean.
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