The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 2 - Describing Distributions with Numbers - Apply Your Knowledge - Page 61: 2.12a

Answer

The mean and standard deviation would not be useful.

Work Step by Step

A high number of states had fewer than 20% of students take the SAT. However, a high number of states also had between 60% and 80% of students take the SAT. Since there are two large groups of numbers within the dataset, the five number summary would be a better representation.
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