Introductory Statistics 9th Edition

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

Chapter 3 - Section 3.2 - Measures of Dispersion for Ungrouped Data - Exercises - Page 97: 3.45

Answer

Data Set I: Mean = 24.6 Standard Deviation = 14.639 Data Set II: Mean = 31.6 Standard Deviation = 14.639

Work Step by Step

The mean for both data sets are different but the value of standard deviations are same, because the addition on the values in the data set will affect the mean but standard deviation will not be affected.
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