De nauwkeurigheid van geclassificeerde kaarten

Classified choropleth maps are used both in order to communicate particular known geographies and to explore unknown geographies. In both cases, it is important that information about the classification accuracy is given. Using an accurate classified map reduces the probability that the map enhance an impression of geographical differences that only to a small extent is present in the data, or that the map hides differences that indeed is present in the data. If users of a GIS or cartographic software are informed about how accurate the current classification is, than they are better equipped in making maps functioning as sources for geographical knowledge rather than geographical nonsense.