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 - Concept and Vocabulary Check - Page 791: 1



Work Step by Step

The arithmetic mean is found by adding all the data values in a set and dividing the sum by the number of data values. For example, the mean of the set: 3, 5, 4, 6 is found by adding the four values: 3 + 5 +4 + 6. The sum is 18. Then divide the sum of 18 by 4 (the number of values). $\frac{18}{4}$ = 4.5 (the mean of the data set).
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