Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 2 - Section 2.1 - Assess Your Understanding - Applying the Concepts - Page 78: 30d


Maybe there are other explanatory variables that were not considered by the researcher. They are called lurking variables.

Work Step by Step

Example: one class meets on Friday when many students skip class or one class has many good students supported by scholarships.
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