Range graded proportional circle map

http://www.neiu.edu/~ejhowens/377/examples.htm

Range graded proportional circle maps show data on a map by using circles in relation to the ranges of data. The larger circles represent larger data and the smaller circles represent smaller data. This map shows the population of Filipinos in the United States. According to the map, Texas has the largest circle which means that Texas has the largest population of Filipinos.