Describe and illustrate important steps to be followed in a choropleth map.
Answers
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.
"Choropleth Map indicates different colouring and shadings to represent a particular area, population density, etc.
The following are the steps to be followed in Choropleth map:
a) Arrange the population, measurement or numerical data from smallest range to highest range.
b) Group the data in a sectoral way based on the category.
c) Select an interval range from the observed data.
d) By the shading and colouring, the data is denoted from an increased mean to the decreased possibility."