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Contents

Maps 

Chapter:
Visual Presentation of Data
Author(s):

Stacy Christiansen

Maps

Maps are useful to demonstrate relationships or trends that involve location and distance or to illustrate study sampling methods (Example F19). 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.

Example F19 A map to explain the locations of various study sites, including an inset to put the smaller area into geographical context.

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