Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 2 - Methods for Describing Sets of Data - Exercises 2.48 - 2.70 - Applying the Concepts - Basic - Page 57: 2.61a

Answer

- The mean, obtained by adding all observations and dividing by the number of observations, is $31.64$ points. - The median, representing the score under which we find $ 50\%$ of the observations, is $32$ points. - The mode, that is, the score appearing the most number of times in the dataset, is $40$ points.

Work Step by Step

Let's import the dataset file into our spreadsheet calculator, and invoke the descriptive statistics feature of the Data Analysis add-on, as illustrated in the screen snip below. The information we obtain is: - The mean, obtained by adding all observations and dividing by the number of observations, is $31.64$ points. - The median, representing the score under which we find $ 50\%$ of the observations, is $32$ points. - The mode, that is, the score appearing the most number of times in the dataset, is $40$ points.
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