Range Graded Proportional Circle Map

http://www.neiu.edu/~jrthomas/377/circle.jpg

A Range Graded Proportional Circle map is a type of Proportional Circle map. A Range Graded Proportional map represents the range of the data by the size of the circle. For example, in this map of Mexican population, you can see that the states of California and Texas have the largest population of Mexicans in the west by the size of the circles compared to the other states'!