12th Edition

ISBN: 9780321836960

Author: Mario F. Triola

Publisher: PEARSON

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Textbook Question

Chapter 2.3, Problem 11BSC

Constructing Histograms. In Exercises 9-18, construct the histograms and answer the given questions.

11. Pulse Rates of Males Use the frequency distribution from Exercise 21 in Section 2-2 to construct a histogram. Does the histogram appear to depict data that have a normal distribution? Why or why not?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 2.3, Problem 10BSC

Chapter 2.3, Problem 12BSC

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Solution Summary: The author analyzes the histogram of the frequency distribution for the pulse rates of males using the MINITAB software.

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