Essentials of Statistics for the Behavioral Sciences 8th Edition

Published by Cengage Learning
ISBN 10: 1133956572
ISBN 13: 978-1-13395-657-0

Chapter 3 - Measures of Central Tendency - Problems - Page 85: 3

Answer

$M=5.67$ $median=6$ $mode=3$

Work Step by Step

The mean: $M=\frac{∑X}{N}=\frac{3+6+7+3+9+8+3+7+5}{9}=\frac{51}{9}=5.67$ Scores in ascending order: $3~~3~~3~~5~~6~~7~~7~~8~~9$ Since there are 9 scores ($N=9$), the median is the 5th score in ascending order: $median=6$ Frequencies: Score $3$: $3$ Score $7$: $2$ Other scores: $1$ $mode=3$
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