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Visual Presentation of Data

Stacy Christiansen

Maps are useful to demonstrate relationships or trends that involve location and distance or to illustrate study sampling methods (Example ). Maps may be used to demonstrate geographic relationships (eg, spread of a disease). Choropleth maps depict quantitative data (eg, relative frequencies by county, state, country, province, or region), with differences in numerical data, such as rates, shown by shading or colors. Authors should verify map details to avoid misspelled or incorrect names, deleted features, distorted geographic relationships, misplaced or missing cities, and misplaced boundaries.

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