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: 33

Answer

a)0.6 b)We have to have n-1 values determined which determines the nth value.

Work Step by Step

a)The mean is 0.62, therefore the sum of the values is: $5\cdot0.62=3.1$. The sum of the values we know is: 0.3+0.4+1.1+0.7=2.5, therefore the missing value is: 3.1-2.5=0.6. b)We have to have n-1 values determined which determines the nth value. n-2 values would not be enough because then we would only know the sum of the remaining two.
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