## Stats Modeling the World, 4th Edition

Published by Pearson

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

#### Answer

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.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.