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: 17


$72.5\ ^{o}F$

Work Step by Step

Write the list in sorted order and find the item(s) in the center of the list. $63\ ^{o}F, 67\ ^{o}F, 69\ ^{o}F, \underset\uparrow71\ ^{o}F, \underset\uparrow74\ ^{o}F, 75\ ^{o}F, 81\ ^{o}F, 83\ ^{o}F$ Since this set contains an even number of items, find the mean of the 2 center items to determine the median. $\frac{71+74}{2}=\frac{145}{2}=72.5$
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