Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 1 - The Nature of Probability and Statistics - 1-4 Experimental Design - Exercises - Page 24: 2

Answer

cross-sectional retrospective longitudinal

Work Step by Step

In a cross-sectional study, the data is collected all at one time. In a retrospective study, data from the past is used. A longitudinal study uses data collected over a period of time and may include past and present data.
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