Stats Modeling the World, 4th Edition

Published by Pearson
ISBN 10: 0133151549
ISBN 13: 978-0-13315-154-1

Chapter 6 - Scatterplots, Association, and Correlation - Exercises - Page 168: 7


A z-score of 2.20 means that you scored 2.20 standard deviations above the class mean score.

Work Step by Step

A z-score measures how many standard deviations a number is above or below the mean. A positive z-score indicates that the number is above the mean, and a negative z-score indicates that it is below the mean. Since 2.20 is positive, your score is 2.20 standard deviations above the mean.
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