Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 12 - Data Analysis and Probability - 12-3 Measures of Central Tendency and Dispersion - Practice and Problem-Solving Exercises: 16

Answer

Set A: mean = 11.8, range = 21 Set B: mean = 14.6, range = 5

Work Step by Step

To find the mean, we add up all of the values and divide by the total number of values. Mean A: $\frac{0+12+7+19+21}{5} = 11.8$ Mean B: $\frac{13+16+15+17+12}{5} = 14.6$ To find the range, we subtract the smallest term from the largest term. Range A: $21-0 = 21$ Range B: $17-12=5$ The mean of Set B is greater than the mean of Set A, but the range of Set A is greater than the range of Set B.
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