Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 1 - Section 1.5 - Population Versus Sample - Exercises - Page 18: 1.20


a. Non random sample b. A convenience sample. c. Selection error or bias.

Work Step by Step

a. Only a particular group of members from the population is selected. b. The professor had selected the most accessible population ( her statistics class ) as a sample. c. Only a particular group of members are selected, so they are not representative to the population (the university students).
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