Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 12 - Data Analysis and Probability - Chapter Review - Page 788: 12


Mean is 26.33 Median is 26 Modes are 23,25 and 29 Range is 9

Work Step by Step

You have the values 23,31,26,27,25,28,23,23,25,29,29,29,25,22,30. To find the mean add all the numbers and divide by 15(number of values):$\frac{23+31+26+27+25+28+23+23+25+29+29+29+25+22+30}{15}$=$\frac{395}{15}$=26.33.The mean is 26.33 To find the median, arrange the numbers from least to greatest and find the middle value:22,23,23,23,25,25,25,26,27,28,29,29,29,30,31.The median is 26. To find the mode, determine which numbers occur most often.23,25 and 29 occur thrice. So the modes are 23,25 and 29. The range is the difference between the largest and smallest value: 31-22=9. The range is 9.
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