Answer
$4.4$
Work Step by Step
For the given data set:
$x=5, 9, 10, 11, 11, 12, 15, 18, 20, 22$
$\bar{x}=13.3$, $n=10$
the mean deviation can be calculated as: $4.4$
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 - 3-2 Measures of Variation - Extending the Concepts - Page 146: 47
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