Answer
Mid Point = 20.25
The distribution is skewed to the left
Work Step by Step
Since the no. of observations is even, mid point can be calculated by taking average of middle two values.
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 1 - Picturing Distributions with Graphs - Chapter 1 Exercises - Page 45: 1.45b
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