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: 3

Answer

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Work Step by Step

The advantage of an observational study is that the researcher is less likely to skew the results in the process of manipulating the variables. However, it is harder to test what effect a given change will have on a system.
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