Chapter 2: Introduction to Categorical Data (Vocabulary, Quiz Questions, and Practice Exam Questions)

Which of the following should a business use when it wants to compare several products with each other?

Column Chart

How to create a bar graph:

1. Draw a horizontal and vertical axis. 2. Label one axis with the classification types along one axis and the numerical values along the other. 3. Evenly distribute the numerical values along the appropriate axis. 4. Create a bar for each classification type, making it the height of the value that corresponds to that type.

A company wants to show how fast its cars can accelerate when compared with the competition. Which chart should it use to convey this information?

Bar Chart

Katie is collecting data about the number of people that are interested in different dance styles. After passing out a survey, she has gathered the following information: Style / Number of people interested in this style Ballet / 20 Jazz /12 Hip Hop / 8 Lyrical / 26 Tap / 10 What type of data did Katie collect?

Categorical

What is data that is collected in groups or topics, where the number of events in each group is counted numerically?

Categorical data

Doughnut Chart

Like a pie chart, it displays data as parts of a whole, but with a hole. This allows you to display multiple series of a chart within each other, like the picture.

Sam wants to show how much of his sales come from families and college students when compared to all his sales. Which of the following charts/graphs should he use?

Pie Chart

What is the first step in creating a chart?

Select the data for the chart

Pie Chart

a chart that shows the relationship of a part to a whole

Column Chart

a chart that uses bars of varying height to illustrate values in a worksheet. Generally used for showing data changes over a period of time or for comparing items.

Bar Chart

are often used to compare individual items

Line Graph

best for data continuous in nature

Horizontal Bar Graph

data has negative and positive values but is still a comparison between two or more fixed independent variables

Histogram

each bar represents a range of dependent variables instead of just one data point

Vertical Bar Graph

is best when you have to compare between two or more independent variables

Chart

is more often used to compare more than one thing

Graph

is used primarily to display trends over a period of time

Range Bar Graph

represents a range of data for each independent variable. The data do not start from a common zero point but begin at a low number for that particular point's range of data

Composite Bar Graph

where the data is stacked instead of side-by-side. The stacked arrangement is helpful when a summary of the data is appropriate.

Group Bar Graph

will have two independent variables, such as location and year

A line graph is best used for which of the following data?

Sales over time