Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0-32191-121-0
ISBN 13: 978-0-32191-121-6

Chapter 2 - Descriptive Statistics - Section 2.2 More Graphs and Displays - Exercises - Page 66: 40

Answer

a) The graph is misleading because the barrel representing non OPEC countries is thicker than the barrel representing OPEC countries. b) A picture has been attached.
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Work Step by Step

The new graph is correct because the barrels for both are equal in thickness.
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