Distribution maps can show how measurements vary across areas using three main types: dot maps represent values like population with dots, choropleth maps use color shades to depict variations of a measurement across a uniform area, and isopleth maps simplify continuous distributions with lines connecting equal values allowing interpolation between them.

1. Distribution of Maps
Grade – 9
Geography

2. Distribution maps can be used to see how measurement changes across
different areas.There are three major types of distributional maps. They
are:
• Dot Distribution or Density map – This map is easy to use and makes use of
dots to indicate a value in an area such as population distribution. One dot
can be used to represent a specific number of people.
• Choropleth map – Dots are replaced by a various shades of the same color
or different colors. These maps depict the intensity of a variant. They
represent how one measurement differs across the same area.
• Isopleth Map - Isopleth maps simplify information about a region by
showing areas with continuous distribution. Isopleth maps may use lines to
show areas where elevation, temperature, rainfall, or some other quality
is the same; values between lines can be interpolated.

3. DOT MAPS

4. Example for a Dot Map

5. Choropleth Map

6. Example for a Choropleth Map

7. Isopleth Map

8. Example for a Isopleth Map

10. Content Compiled by,
D. B. Naga Muruga