Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 3 - Data Description - 3-2 Measures of Variation - Exercises 3-2 - Page 145: 27

Answer

The data set for factory workers is more variable.

Work Step by Step

Calculate the coefficient of variance $CVar=s/X$ Construction workers $CVar1=2.3/11=0.209$ Factory workers $CVar2=1.8/8=0.225$ As $CVar2>CVar1$, we conclude that the data set for factory workers is more variable.
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