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 - 1-4 Collecting Sample Data - Page 32: 2

Answer

If making an experiment, we can be sure of the causes, whereas if observing, not everything is "under our control".

Work Step by Step

If making an experiment, we can be sure what causes the weight loss, whereas if only observing, there might be other factors that contribute to the weight loss.
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