Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 1 - Introduction to Statistics - Review - Review Exercises - Page 37: 8

Answer

a)Random. b)Stratified. c)Nominal. d) Statistic. e)Becomes a voluntary response sample.

Work Step by Step

a) Everyone in the population is equally likely to be selected, hence it is a random sample. b)Randomly selecting people from the different states (each serves as a stratum) ensures us of getting a representative sample. Hence it is a stratified sample. c) The responses are not numerical, hence we cannot rank them, hence it is nominal. d)Data is coming from a sample, not from the population, hence it a statistic. e) It would become a voluntary response sample, because people having a really strong opinion (either good or bad) are the most likely to answer, hence the results don't represent the general opinion correctly.
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