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Exam 2: Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

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Question 71

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To construct a histogram, the class frequencies are plotted on the ________.

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Question 72

Multiple Choice

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Refer to the following breakdown of responses to a survey of room service in a hotel. What percent of the responses indicated that customers were satisfied?

A) 40%
B) 33%
C) 50%
D) 100%

E) B) and C)
F) None of the above

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Question 73

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A student was studying the political party preferences of a university's student population. The survey instrument asked students to identify themselves as a Democrat or a Republican. This question is flawed because:

The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. How many orders were delivered in less than three days?

A _____ chart is useful for displaying a frequency distribution for a qualitative variable.

Refer to the following breakdown of responses to a survey of room cleanliness in a hotel. Draw a pie chart that illustrates the relative frequencies.

A data set has 200 observations. In the data, a qualitative variable's highest value is "extremely satisfied" and its lowest value is "extremely dissatisfied." What is the minimum class interval that you would recommend?

Refer to the following breakdown of responses to a survey of room service in a hotel. What is the class interval for the frequency table above?

In order to convert class frequency to relative class frequency, we

Refer to the following breakdown of responses to a survey of room cleanliness in a hotel. Draw a bar graph that illustrates the relative frequencies.

A ___________ is useful for displaying the relative frequency distribution for a nominal variable.

Refer to the following breakdown of responses to a survey of room cleanliness in a hotel. What is the class with the greatest frequency?