A pie chart is a circular statistical graphic that is divided into slices to illustrate numerical proportions. The size of each slice of the pie is proportional to the quantity it represents.

The key parts of a pie chart include:

**Slices:**Each slice represents a category or a proportion of a whole.**Title:**A title that describes the overall data being represented.**Labels:**Labels for each slice, often showing the category or the percentage it represents.**Legend:**A key that explains what each slice represents.

To create a pie chart, follow these steps:

**Collect Data:**Gather the numerical data that you want to represent in the pie chart.**Calculate Percentages:**Calculate the percentage of each category by dividing the value of each category by the total and multiplying by 100.**Draw the Chart:**Use a protractor or a circle template to draw a circle. Divide the circle into slices according to the percentage values you calculated.**Add Labels and Legend:**Label each slice with the category it represents and create a legend to explain the categories.

When interpreting a pie chart, keep the following in mind:

**Proportions:**The size of each slice shows the proportion of the whole that it represents.**Comparison:**Compare the sizes of the slices to understand the relative importance of each category.**Percentage:**Use the percentage values or labels to understand the exact proportion that each category represents.

Suppose you have data on the favorite fruits of a group of people: 30% apples, 25% bananas, 20% oranges, and 25% strawberries. You can represent this data using a pie chart, with each slice representing the percentage of people who chose each fruit as their favorite.

Pie charts are a useful tool for representing numerical proportions visually. They allow for easy comparison of different categories and provide a clear visualization of how a whole is divided into its parts.

Remember to use pie charts when you want to represent data as parts of a whole and when you want to easily compare proportions between different categories.

Study GuideGraphs Activity LessonVenn Diagrams Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Single Line Graph Worksheet/Answer key

Single Line Graph Comprehension Worksheet/Answer key

Single Line Graph Comprehension Worksheet/Answer keySingle Line Graph Worksheet/Answer keySingle Line Graph Worksheet/Answer keySingle Line Graph Worksheet/Answer keySingle Line Graph Worksheet/Answer keySingle Line Graph Worksheet/Answer keySingle Line Graph

Data Analysis and Probability (NCTM)

Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them.

Select, create, and use appropriate graphical representations of data, including histograms, box plots, and scatterplots.

Select and use appropriate statistical methods to analyze data.

Discuss and understand the correspondence between data sets and their graphical representations, especially histograms, stem-and-leaf plots, box plots, and scatterplots.