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 - 12-4 Box-and-Whisker Plots - Lesson Check - Page 749: 5



Work Step by Step

List the data from least to greatest: 65,67,77,79,81,83,88,89,91,95. Percentile rank of a data value is the % of values that are less than or equal to that value. Percentile rank of 70 means 70% of the grade is equal or less than the grade so the first 7 of the 10 data. So the grade is 88.
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