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[[Image:2004US_election_map.jpg|thumb|The [[United States presidential election, 2004|US Presidential Election of 2004]], visualised using a '''choropleth map''']]
A '''choropleth hello my names ben map''' ([[Greek language|Greek]] χωρα + πληθαίν:, ("area/region" + "multiply") is a [[thematic map]] in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as [[population density]] or [[per-capita income]]. It provides an easy way to visualize how a measurement varies across a geographic area. Choropleth is often misspelled as '''chloropleth''' - with an extra "L" - because it is mistakenly assumed that the name of the map refers to its use of colour.
Choropleth maps are based on statistical data aggregated over previously defined regions (such as counties), in contrast to area-class and [[Contour line|isarithmic]] maps, in which region boundaries are defined by data patterns. Thus, where defined regions are important to a discussion (as in an election map divided by electoral regions), choropleths are preferred. Where real-world patterns may not conform to the regions discussed, issues such as the [[ecological fallacy]] and the [[modifiable areal unit problem]] (MAUP) can lead to major misinterpretations, and other techniques are prefereable. For example, a map showing population bell
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