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

Refer to the following distribution of commissions: What is the class interval?

In a bar chart, why are there spaces between the bars on the horizontal axis?

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

Refer to the following distribution of ages: For the distribution of ages just shown, what is the relative class frequency for the lowest class?

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?

When a class interval is expressed as 100 up to 200, _________________________.

The midpoint of a class interval is also called a class ________.

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

The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. What is the relative frequency for orders delivered in three days or more?

Refer to the following distribution: What is the class midpoint for the $45 up to $55 class?

A table showing the number of observations that have been grouped into each of several classes is called a frequency ________________.

A pie chart is similar to a relative frequency distribution.

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

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 one day?

In a frequency distribution, a class defined as "Under $100" and "$1,000 and over" is called a(n) ____________.

To construct a bar chart, the class frequencies are plotted on the _________.

A cumulative frequency distribution is used when we want to determine how many observations lie above or below certain values.

A frequency distribution groups data into classes showing the number of observations in each class.

Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet?" What type of chart should be used to describe the frequency table?

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?