2nd Edition

ISBN: 9781259570643

Author: Navidi

Publisher: MCG

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Textbook Question

Chapter 2.2, Problem 38E

Classes of differing widths: Consider the following relative frequency distribution for the data in Table 2.7, in which the classes have differing widths.

Chapter 2.2, Problem 38E, Classes of differing widths: Consider the following relative frequency distribution for the data in

a. Compute the class width for each of the classes.
b. Construct a relative frequency histogram. Compare it to the relative frequency histogram in Figure 2.6, in which the classes all have the same width. Explain why using differing widths gives a distorted picture of the data.
c. The density of a class is the relative frequency divided by the class width. For each class, divide the relative frequency by the class width to obtain the density.
d. Construct a histogram in which the height of each rectangle is equal to the density of the class. This is called a density histogram.
e. Compare the density histogram to the relative frequency histogram in Figure 2.6, in which the classes all have the same width. Explain why differing class widths in a density histogram do not distort the data.

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Chapter 2.2, Problem 37E

Chapter 2.3, Problem 1CYU

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Chapter 2 Solutions

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Solution Summary: The author explains the class width for each of the classes. The given information is a frequency distribution of data having different classes widths.

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Chapter 2 Solutions