6th Edition

ISBN: 9780134462356

Author: Pirnot

Publisher: PEARSON

Concept explainers

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency o…

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…

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Textbook Question

Chapter 14.2, Problem 21E

In Exercises 21 − 28 , find the mean, median, and mode for each data set. In each case, explain which measure you believe you believe best describes a typical value in the distribution.

Facebook usage. A group of 20 students were asked how many times they visit Facebook per week and the following results were obtained:

6 , 20 , 9 , 18 , 17 , 25 , 20 , 4 , 22 , 25 , 13 , 5 , 6 , 9 , 13 , 23 , 20 , 13 , 18 , 14

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Chapter 14.2, Problem 20E

Chapter 14.2, Problem 22E

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Chapter 14 Solutions

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Solution Summary: The author explains how to calculate the mean, median, and mode of a data set.

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Chapter 14 Solutions