Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 1 - Section 1.5 - Assess Your Understanding - Vocabulary and Skill Building - Page 42: 5


(a) Sampling bias. (b) He should use the systematic sampling.

Work Step by Step

(a) This is not a representative sample. (b) To obtain a more representative sample he must select customers seven days a week throughout the day. For example, he can select one or two customers per hour for the next seven days.
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