# Creating and Analyzing a Binary Map Using FRED® Maps

This lesson demonstrates how easy it is to create a binary FRED map. Students search for state-level data on average weekly earnings and visualize them in FRED. The goals are for students to customize a map, observe patterns in mapped data, and note differences across geographical areas.

## Economic and Statistical Concepts Covered in this Lesson

• Average: The sum of a collection of numbers divided by the count of numbers in the collection.
• Binary map: A map with regions divided into two classes.
• Choropleth map: A map that uses shading, color, or symbols to convey a quantity or property for an area.
• Median: The middle number in a list of numbers; the number that divides data into a top half and a bottom half.
• Per capita: A quantity per person determined by dividing the total quantity by total population.
• Personal income: The income that individuals receive from all sources, including wages and salaries, dividends and interest, rents, profits, and transfer payments.

## Objectives

Students will be able to

• explain the differences between a binary map and a map with more than two data categories,
• define personal income and per capita personal income, and
• compare maps of the same data displayed with equal intervals and with fractile intervals.

## Compelling Question

How does a binary map show values above and below the median?

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