Answer
$4.5$
Work Step by Step
Use the range rule of thumb to estimate the standard deviation using the range value.
$s=18/4=4.5$
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 3 - Data Description - Chapter Quiz - Page 182: 29
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