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: 9

Answer

(a) Nonresponse bias. (b) The polling organization can use callbacks, or they can use real callers to get more responses.

Work Step by Step

(a) More than 98% of the individuals selected to be in the sample did not respond to the questionnaire. (b) It can phone those who did not respond or can use real callers in order to increase the rate of responses.
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