CHLOROPLETH MAP: Presidential Election- These maps are typically used to indicate the average values of a property or quantity within a predefined area through the use different shading, coloring, or the placing of symbols.
ISARITHMIC MAP: Georgia's Annual Precipitation- These maps are typically used to represent data seta that have a "continuous distribution" and "smooth change in value". It uses a range of color color/value or related classes of color. Topographic maps are a subset of Isarithmic maps.
DOT DENSITY MAP: People Living in the United States- These maps are typically used to show the presence of a feature or a phenomenon, such as number of people or farms in an area. To do this, it uses a dot symbol. They rely on visual scatter to show spacial pattern.
PROPORTIONAL SYMBOLS MAP: Total Murders per State in U.S.- These maps scale the size of simple symbols (usually a circle or square) proportionally to the data value found at that location. The larger the symbol, the "more" of something exists at a location. It can be used for many categories. Total population per state (or the entire world) and total murders per state are just two examples of how proportional symbols maps can be used.
The red lines through the state of Georgia from top to bottom show Georgia's elevation at 900 feet, 700 feet, 400 feet, and 300 feet.
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