Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 1 - The Nature of Probability and Statistics - Review Exercises - Section 1-4 - Page 35: 55

Answer

People tend not to report their true income. Moreover, size of the sample may not be large enough and sample may not cover graduates of all social backgrounds.

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