Introductory Statistics 9th Edition

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

Chapter 3 - Self-Review Test - Page 123: 19

Answer

The standard deviation is zero when a data set has no variation.

Work Step by Step

For exampe, if 5 students in a class are the same age, which is 15 years, the four values in the data set are 15,15,15,15,15, Since there is no variation, the value of standard deviation will be zero.
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