Introductory Statistics 9th Edition

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

Chapter 3 - Section 3.1 - Measures of Center for Ungrouped Data - Exercises - Page 88: 3.12

Answer

a. mean =23.15 median = 21 mode = 5,27 b. 10% trimmed mean = 22.278

Work Step by Step

a) mean = $(12+27+8+15+5+9+18+13+35+23+19+33+41+59+3+26+5+34+51+27)/20 = 23.15$ median = $(10th + 11th) /2 = (19+23)/2 = 21$ mode = $5,27$ b)trimmed mean 10%>>> remove outlier data ({3},{59}) $= (12+27+8+15+5+9+18+13+35+23+19+33+41+26+5+34+51+27)/18 =22.278$
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