A range-graded proportional circle map compiles all the values into groups with a specific range, then uses a proportional circle map to depict the occurrence and location of each range of values. This is a map of motor vehicle deaths in California. It is a range-graded proportional circle map because the number of deaths are are sorted into 5 groups, each with a range of values, and each with a circle that has a corresponding proportional size.
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