Bivariate Choropleth Maps

Bivariate Choropleth Maps

https://www.e-education.psu.edu/geog486/l8_p5.html

Using a set of two variables are what make up Bivariate Choropleth Maps. Rows and columns would each indicate a specific variable, in this example dark purple shows countries with a higher rate of cancer with women having no insurance, on the contrary gray is a much lower rate.

Unclassed Choropleth Maps

Unclassed Choropleth Map

Fertility Rate Eurpoe

http://www.esds.ac.uk/international/support/user_guides/gisoverview.asp#choropleth

In an Unclassed choropleth proportional degrees of color darkness are used instead of numerical values. For example the higher the objects attribute value the darker the color will be on the map. The map shown shows the fertility rate for women in Europe which shows the maximum at 2.27 which seems like it may be a lot higher in the United states. 

Nominal Area Choropleth Map

Nominal Area Choropleth Map

Access to Drinking Water

http://geoportal.icimod.org/TrainingandEducation/GISforBeginners/p1ch8/

Nominal Area Choropleth Map usually will show quantitative differences for specific variables. These maps use nominal data to display the projected information. To avoid errors this mapping technique uses properties that are constant. 

Standardized Choropleth Maps

Standardized Choropleth Maps

Adult Obesity

http://www.statcan.gc.ca/pub/92f0138m/2008003/figures/5200003-eng.htm

As another form of choropleth mapping this technique uses ranges and or colors to depict the information. It is a type of thematic mapping that focuses usually on a single theme like this one focusing on obesity where the data is summarized in a specific area.

Univariate Choropleth Maps

Univariate Choropleth Maps

http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/USA_states_population_density_map.PNG/800px-USA_states_population_density_map.PNG

Univariate choropleth maps display a single variable. This map contains the population per square mile by each state. It is based on a page provided by U.S. Census Bureau.

Accumulative Line Graph or Lorenz Curve

Accumulative Line Graph or Lorenz Curve

Distribution of Wealth 

http://www.squarecirclez.com/blog/the-gini-coefficient-of-wealth-distribution/4187

Used in economics the Lorenz curve again is a graphical representation.  These graphs show the cumulative distribution function and probability distribution of wealth. It is used to describe the inequality in wealth or size. The Lorenz curve is formed by plotting the cumulative distribution of the amount of the variable against its frequency.

Bilateral Graph

Bilateral Graph

 http://www1.eere.energy.gov/vehiclesandfuels/facts/2008_fotw546.html

A bilateral graph looks much like a bar graph. This type of graph depicts increases on one sides and decreases on another. This data is displayed in positive and negative values. Here you can observe the decreases in world wide automotive sales for the third quarter of 2008.