The range graded proportional circle map is unique because it displays only one single variable. This variables ratios and proportions are related with circles of various locations. Each circle within a map shows a specific point on a land area. The circles vary in size due to the amount of information being displayed. The map provided shows the amount of traffic fatalities within the United States. Circle location displays each individual state and the size of the circle displays the amount of fatalities each state has encountered. By using these circles to display this information gives this map creditability in being a range graded proportional circle map.
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