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GER Twenty-five residents of a community for senior citizens were asked to keep track of the number of hours they watched TV during the past week. 20 2 12 7 32 7 10 7 13 17 14 15 15 9 27 5 21 4 7 6 2 18 10 5 11 a. Construct a frequency distribution to display these data. b. What are the midpoints of the class intervals? c. Add columns to the table to display the percentage distribution, cumulative frequencies, and cumulative percentages. d. Write a paragraph summarizing this distribution of scores.

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Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836
BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836

Solutions

Chapter
Section
Chapter 2, Problem 2.8P
Textbook Problem
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GER Twenty-five residents of a community for senior citizens were asked to keep track of the number of hours they watched TV during the past week.

20 2 12 7 32
7 10 7 13 17
14 15 15 9 27
5 21 4 7 6
2 18 10 5 11

a. Construct a frequency distribution to display these data.

b. What are the midpoints of the class intervals?

c. Add columns to the table to display the percentage distribution, cumulative frequencies, and cumulative percentages.

d. Write a paragraph summarizing this distribution of scores.

Expert Solution
To determine

a)

To Construct:

A frequency distribution.

Explanation of Solution

Set k = 10, R = 32 – 2 = 30, so we can round off interval size to i = 3. The first interval will be 0-2, to include the low score of 2, and the highest interval will be 30–32.

Hours Frequencies
0-2 2
Expert Solution
To determine

b)

To find:

The midpoints of the class intervals.

Expert Solution
To determine

c)

To Display:

The percentage distribution, cumulative frequencies, and cumulative percentages.

Expert Solution
To determine

d)

To summarize:

A paragraph about the distribution of the scores.

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