Answer
It is impossible to get a negative value in variance and standard deviation. This is because the summation of the difference between each data and the mean will always be at least zero.
Work Step by Step
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Essentials of Statistics for the Behavioral Sciences 8th Edition
by Gravetter, Frederick J.; Wallnau, Larry B.
Published by
Cengage Learning
ISBN 10:
1133956572
ISBN 13:
978-1-13395-657-0
Chapter 4 - Measures of Variability - Problems - Page 115: 3
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