Choropleth maps

Question 1

What is a choropleth map?

Answer 1

is a type of statistical thematic map that uses intensity of color to correspond with an aggregate summary of a geographic characteristic within spatial enumeration units

Question 2

Disadvantages of choropleth maps:

Answer 2

They give a false impression of abrupt change at the boundaries of shaded units.

Choropleths are often not suitable for showing total values.

It can be difficult to distinguish between different shades.