Maps

Dot Density map: Is a map in which dots are used to represent the density of a particular attribute in that region.

Proportional Symbol map: Is a map in which the cartographer selects a symbol form, and varies its size from place to place, in proportion to the quantities the symbol represents.

Choropleth map: Is a thematic map in which areas are shaded or patterned in which shows to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.

Isarithmic map:  The cartographer selects a distinctive color or shading, and applies it to artificial collection units.