Statistical Map

A Statistical Map is one which uses distribution data to present statistical information. Three of the most common types of Statistical Maps are dot maps, point symbol maps and choropleth maps. Because the cartographer has to make important decisions about how to group and generalize the data behind the map, Statistical Maps are subject to manipulation. There is a propensity to make the data fit the needs of the mapmaker. A famous Statistical graph/map is Minard’s that depicts the army of Napoleon’s march into and out of Russia, which combines a flow map with data on mortality of the ranks and average temperature among others. This map is considered exemplary by Tufte in his work on effective presentation of data. The accompanying map is a statistical map that represents demographic population distribution in America, where the peaks represent high population density.