Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Skills Handbook - Descriptive Statistics and Histograms - Exercises: 5

Answer

$$mean = 1.5$$ $$median = 1.5$$ $$mode = none$$

Work Step by Step

To calculate the mean, sum the data values in the set and divide by the number of data values in the set: $$mean = \frac{1.2+1.3+1.4+1.5+1.6+1.7+1.8}{7}=\frac{10.5}{7}=1.5.$$ The median is the middle value of the data set when it is arranged in increasing or decreasing order: $$1.2,1.3,1.4,1.5,1.6,1.7,1.8.$$ So $$median = 1.5.$$ The mode is the value which occurs most often in the data set. Since all the values appear only once, there is no mode in this case.
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