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

A pie chart shows the ______________________.

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

A data set consists of 40 observations. For a quantitative variable, how many classes would you recommend for the frequency distribution?

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

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 polygon, class frequencies are scaled on the ______ axis.

A sample distribution of hourly earnings in Paul's Cookie Factory is: The limits of the class with the smallest frequency are:

A group of 100 students were surveyed about their interest in a new Economics major. Interest was measured in terms of high, medium, or low. In the study, 30 students responded high interest, 50 students responded medium interest, and 20 students responded low interest. What is the best way to illustrate the relative frequency of student interest?

A data set has 200 observations. In the data, a quantitative variable's highest value is 1080 and its lowest value is 960. What is the minimum class interval that you would recommend?

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

A pie chart shows the relative frequency in each class.

In a bar chart, the heights of the bars represent the frequencies in each class.

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

Refer to the following breakdown of responses to a survey of "How confident are you that you saved enough to retire?" What is the class with the greatest frequency?

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.

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 three days or more?

Unorganized data is referred to as ________ data.

The number of observations in each class of a frequency distribution is called a ________________________.

When data is collected using a quantitative, ratio variable, what is true about a frequency distribution that summarizes the data?

To summarize the gender of students attending a college in a frequency distribution, a total of at least ______ classes would be required.