Choropleth maps are based on statistical data from reliable sources and are aggregated into well-known geographic units, which makes them easy to read. However, there are both advantages and disadvantages to using choropleth maps in data analysis.

Choropleth maps are a type of thematic map that use shading or pattern fills to represent data values within different geographic areas. While there are advantages to using choropleth maps, there are also some disadvantages to be aware of.

Advantages. Levels of shading/colour represent a range of values; Visually effective - can see a large amount of information and general patterns; Uses countries, regions or boroughs; Groupings can be flexible to accommodate the spread of values; Disadvantages. Map assumes the whole region/area has the same value, but there could be variations

A choropleth map is a type of thematic map that uses different colors or shading patterns to represent data values for specific geographic areas. While there are advantages to using choropleth maps, there are also some disadvantages that should be considered.