Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 3 - Statistics for Describing, Exploring, and Comparing Data - 3-2 Measures of Center - Beyond the Basics: 38

Answer

It is a lot more than the actual mean.

Work Step by Step

We calculate the quadratic mean: $\sqrt {\frac{3\cdot 0^{2}+2\cdot100^{2}+2\cdot(-100)^{2}+2\cdot162^{2}+2\cdot(-162)^{2}}{11}}=114.8$. The actual mean is 0, so it is a lot more than the actual mean.
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