Choropleth Generalization

• By Chris Hall, Davis School District, Farmington, Utah

Choropleth Generalization

• Sometimes choropleth maps are generalized to the point that they mislead. Look at the well-being plotted out by state versus congressional district.

STATE PLATEVANITIZATION RATE

Graduated Symbol

Dot distribution

5 Classes, Standard Deviation

Choropleth

5 Classes, Equal Number (10 states in each class)

Choropleth

10 Classes, Equal Number (5 states in each class)

Choropleth