Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 12 - Statistics - 12.2 Measures of Central Tendency - Exercise Set 12.2 - Page 793: 58

Answer

$\approx176.88$

Work Step by Step

The mean of $n$ numbers is the sum of the numbers divided by $n$. Hence the mean: $\frac{1\cdot150+2\cdot155+2\cdot160+4\cdot165+6\cdot170+8\cdot175+5\cdot180+4\cdot185+2\cdot190+3\cdot195+1\cdot200+2\cdot205}{40}\approx176.88$
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