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

Refer to the following wage breakdown for a garment factory. What is the class interval for the table of wages above?

Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet"? What is the class interval for the frequency table above?

In a frequency distribution, the number of observations in a class is called class

Refer to the following breakdown of responses to a survey of room service in a hotel. What type of chart should be used to show relative class frequencies?

A frequency distribution for nominal data requires that the categories be ___________________ and ______________________.

In constructing a frequency polygon, class frequencies are scaled on which axis? ______

Refer to the following distribution of ages: What is the class midpoint of the highest class?

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 cleanliness in a hotel. What is the class interval for the frequency table above?

For a frequency distribution of quantitative data, if every individual, object or measurement can be assigned to a class, the frequency distribution is ___________.

Refer to the following information from a frequency distribution for "heights of college women" recorded to the nearest inch: The first two class midpoints are 62.5" and 65.5". What are the class limits for the lowest class?

A student was interested in the cigarette smoking habits of college students and collected data from an unbiased random sample of students. The data is summarized in the following table: What type of chart best represents the frequency table?

Refer to the following breakdown of responses to a survey of "How confident are you that you saved enough to retire"? What percent of the responses indicated that users were very confident?

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

For a frequency distribution of qualitative data, if the observations can be assigned to only one class, the classes are ___________________________.

To construct a pie chart, relative class frequencies are used to graph the "slices" of the pie.

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 from 1 day up to 3 days?

A pie chart shows the

Refer to the following distribution: What are the class limits for class with the highest frequency?

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