Circle Graphs – Practice Problems

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A circle graph, or pie chart, is a graph that is made by dividing a circle into sections. It is used to compare proportions or show information as to how the parts relate to the whole by representing these parts as percentages or fractions. It’s a way of representing data that shows the fractional part or percentage of a whole as an appropriately-sized wedge or section of a circle.

To create a circle graph, check first if the data set makes a whole. If so, convert your data to percentages or fractions and compute for the corresponding central angle that determines the size of each section by multiplying the fraction by 360°. Create the graph and finally give your graph a title and don’t forget to label the sections.

Circle graphs display information in a format that is easy for people to understand. It is often used in newspapers and daily periodicals. It’s a popular tool in politics because it is an excellent way of displaying what percentage of the population supports a particular candidate. Circle graphs can also illustrate what portion of the population is in favor of a particular idea. It has valuable applications in history, social studies, and science.

Summarize and describe distributions.


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Exercises in this Practice Problem
Explain how to draw a circle graph.
Label the circle graph.
Determine the angles for the circle graph.
Interpret the circle graph.
Find the right circle graph.
Decide which circle graph corresponds to each table.