Proportional Circle Map

http://personal.frostburg.edu/sbriggs0/maps.htm

Proportional circle maps are basically what they say they are, they use circles and use different sizes to represent the information they are trying to portray. The larger, lets say the population is, the larger the circle and the smaller the population, the smaller the circle. Usually each size circle is given a number as seen in the legend of this map. This current map portrays the number of walmarts per state in the united states in 2009. The larger the circle, means the more walmarts there are in the state, as expected , the more populated states have more walmarts than the less populated states.