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 Test - Page 791: 7


Without tank: Mean=94.6 Median=94.5 Mode=none Range=19 With tank: Mean=109.6 Median=109.5 Mode=no mode Range

Work Step by Step

Without tank: The values are 85,88,91,95,97,103,104: -->The mean is the average of the data. So add all the values and divide by 8. The mean is 94.6 -->The median is the middle values. the middle values are 94 and 95 so you take the average and that is the median. (94+95)/2=94.5.The median is 94.5 -->The mode is the number that occurs most often. There is no mode. -->The range is the difference between the largest and the smallest value:104-85=19. The range is 19. ------ With tank: Add 15 to the mean, median and mode. The range stays the same: -->Mean:94.6+15=109.6 -->Median:94.5+15=109.5 -->Mode=No mode -->Range=19
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