Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 15 - Section 15.6 - Other Average Measurements and Percentiles. - Exercise - Page 518: 2

Answer

12.8

Work Step by Step

Write the list in sorted order and find the item(s) in the center of the list. $2.7, 7.2, 8.1, 9.3, 10.6, 10.9, 11.4, \underset\uparrow12.7, \underset\uparrow12.9, 13.5, 15.9, 16.1, 20.7, 21.9, 30.6, 42.9$ Since this set contains an even number of items, find the mean of the 2 center items to determine the median. $\frac{12.7+12.9}{2}=\frac{25.6}{2}=12.8$
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