Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 2 - Frequency Distributions and Graphs - 2-3 Other Types of Graphs - Exercises 2-3 - Page 91: 9

Answer

The pie graph for the data is shown below. Based on the graph, most parents graded their kid's schools with A or B with A $35\%$ and B $44\%$. Only $1\%$ of the parents graded F with C $15\%$ and D $5%$.
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Work Step by Step

Take the sum of all the numbers, divide each number with this total to get percentages of each grade. Draw the pie graph as shown above.
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