Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0321911210
ISBN 13: 978-0-32191-121-6

Chapter 2 - Descriptive Statistics - Section 2.3 Measures of Central Tendency - Exercises - Page 78: 52

Answer

Mean of the frequency distribution is 31.1455

Work Step by Step

Calculate mid points of each class multiply mid point with frequency sum the value and divide with total frequency
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