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Chapter 2: Q. 2.24 (page 50)

In Exercises 2.20-2.25, we have presented some simple qualitative data sets for practicing the concepts. For each data set,

a. determine a frequency distribution.

b. obtain a relative-frequency distribution.

c. draw a pie chart.

d. Construct a bar chart.

Short Answer

Expert verified

Part(a) The frequency distribution is,

ClassFrequency
A3
B6
C4
D3
E4
Total5

Part(b) The relative frequency distribution is,

ClassFrequencyRelative Frequency
A30.15
B60.30
C40.20
D30.15
E40.20
Total20

Part(c) The pie chart is,

Part(d) The bar chart is as follows,

Step by step solution

01

Part(a) Step 1. Given Information. 

We are given,

02

Part(a) Step 2. Finding the frequency distribution. 

The frequency distribution is as follows,

ClassFrequency
A3
B6
C4
D3
E4
Total5
03

Part(b) Step 1. Finding the relative frequency distribution. 

The relative frequency distribution is given by,

Relative frequency=FrequencyNumber of observations

The relative frequency distribution is as follows,

ClassFrequencyRelative Frequency
A3320=0.15
B6620=0.30
C4420=0.20
D3320=0.15
E4420=0.20
Total20
04

Part(c) Step 1. Drawing the Pie chart. 

The pie chart is as follows,

05

Part(d) Step 1. Drawing the bar chart. 

The bar chart is as follows,

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Most popular questions from this chapter

Use cutpoint grouping with a first class of 40 -under 46.

Adjusted Gross Incomes. The Internal Revenue Service (IRS) publishes data on adjusted gross incomes in Statistics of Income, and Individual Income Tax Returns. The following relative frequency histogram shows one year's individual income tax returns for adjusted gross incomes of less than \(50,000.

Use the histogram and the fact that adjusted gross incomes are expressed to the nearest whole dollar to answer each of the following questions.

a. Approximately what percentage of the individual income tax returns had an adjusted gross income between\)10,000and \(19,999, inclusive?

b. Approximately what percentage had an adjusted gross income of less than \)30,000?

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Top Broadcast Shows. As reported in Primetime Broadcast Programs, a publication of The Nielsen Company, the top three prime broadcast network television shows for the week of August 5, 2013, are as presented in the following table. Ratings are the percentage of TV homes in the United States tuned into television. Identify the type of data provided by the information in each column of the table

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Patients who undergo chronic hemodialysis often experience severe anxiety. Videotapes of progressive relaxation exercises were shown to one group of patients and neutral videotapes to another group. Then both groups took

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a. determine a frequency distribution.

b. obtain a relative-frequency distribution.

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We have drawn a smooth curve that represents a distribution,

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