cartogram

listen to the pronunciation of cartogram
English - English
Specifically, a map-like graph where the relative areas of graph regions are proportional not to the relative areas of the land regions they represent, but rather to another quantitative variable, such as population or gross domestic product
Generally, a map used to indicate geographically-bound statistical information, typically region-by-region values of a given variable, for example by using different shadings for different ranges of values

The fifth cartogram illustrates the criminal statistics for the period 1882-91, which are of unusual interest because.

A map showing geographically, by shades or curves, statistics of various kinds; a statistical map