Question
Describe and illustrate important steps to be followed in preparing a choropleth map.
Solution
The following steps are to be followed in preparing a choropleth map:
1. Arrange the data in ascending or descending order.
2. Group the data in five categories to represent very high, high, medium, low and very low.
3. The interval between the categories may be identified on the following formula i.e., range/ 5 and range = Maximum value-Minimum value.
4. Patterns, shades or color to be used to depict the choosen categories should be marked in an increasing or decreasing order.
