cartogram

plural cartograms

1. datedA 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.

   2 more examples

   1888 October, Dewey, Davis R., "Elementary Notes on Graphic Statistics", in the Massachusetts Institute of Technology Technology Quarterly, Volume II Number 1, published by the students (1888–1889), p. 99, […] whether, however, two states with these respective ratios do not consequently sufficiently differ […] as to warrant distinction in the cartogram, is open to question.

   1895, "Book Notes", in Academy of Political Science (U.S.) and Columbia University Faculty of Political Science, Political Science Quarterly, Volume X Number 3, Academy of Political Science (1895), p. 560, The fifth cartogram illustrates the criminal statistics for the period 1882-91, which are of unusual interest because […]

   1. datedA 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.

      Synonyms: area cartogram, isodemographic map, value-by-area map