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

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 percent of the responses indicated that customers were satisfied?

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 with the greatest frequency?

In a cumulative frequency distribution, the percent of the total frequencies that would fall below the upper limit of the highest class would be _________.

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?

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?

To convert a frequency distribution to a relative frequency distribution, divide each class frequency by the sum of the class frequencies.

In constructing a frequency distribution, the approximate class width is computed as

If the number of observations is 124, calculate the suggested number of classes using the "2 to the k rule."

A pie chart shows the ______________________.

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 preceding frequency table?

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

Ages (rounded to the nearest whole year) of employees at a large company were grouped into a distribution with the following class limits: 20 up to 30 30 up to 40 40 up to 50 50 up to 60 60 up to 70 What is the midpoint for the class 40 up to 50?

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 less than three days?

A group of 100 students was surveyed about their interest in a new International Studies program. Interest was measured in terms of high, medium, or low. In the study, 30 students responded high interest, 40 students responded medium interest, and 30 students responded low interest. What is the relative frequency of students with high interest?

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 of the orders delivered from 1 day up to 3 days?

Ages (rounded to the nearest whole year) of employees at a large company were grouped into a distribution with the following class limits: 20 up to 30 30 up to 40 40 up to 50 50 up to 60 60 up to 70 The class limits for the class 50 up to 60 are _______ and ______.

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 frequency polygon is a very useful graphic technique when comparing two or more distributions.