This is a nominal area choropleth because there are no classifications or numerical data being presented, it is simply a map displaying places and oceans, it is choropleth because of the different colors used for different countries.
Univariate choropleth maps are choropleth maps displaying only one type of data. This map focuses only on water withdrawals in the United States.
A Bivariate Choropleth map is one that shows multiple pieces of data on one choropleth map. This map of Africa shows its land use, life expectancy, and GNP per Capita, all together with only one map.
Range graded circle maps have only a particular range of circles used, the are not infinite. In this map it shows the exact size of the circles being used and what they represent, and these are the only circle sizes used.
In a continuously graded circle map like this one there are infinite circle sizes used to represent approximate numbers. In this map there are 5 circles shown in the key to give a visual aid to what each size represents, however on the map there are many in between sizes to closer represent their number. This cartographer also conveniently wrote the actual amount by the circle.
Multivariate maps display 2 or more types of data in one map. This map is also a proportional circle map, however it is multivariate because it shows proportional population of each region with the circles, but also uses a pie chart method to separate each minority and show how many of each are in particular regions.
This parallel coordinate plot compares the makeup of different fruits and vegetables, each fruit is represented by a different color and % levels of glucose, fructose, maltose, and saccharose are examined. This graph shows that the only vegetable with maltose is corn, all others drop to 0%.
This lorenz curve show % of households versus % income, the blue line shows how the graph would look if there was 100% equality in income, the red line shows how things actually are with some people making more than others.
This is an interesting triangular plot it shows the separation of opium samples found in different places around the world. The three variable are % of narcotine, codeine, and morphine. Shapes inside the triangle represent the different locations.
A wind rose is a circular graph showing the direction and frequency of wind, this particular one also shows the wind speeds. Each circle represents a percentage which is the percent of time that wind travels from that direction, the colors show the speeds of the wind.
This stem and leaf plot shows the ages of people at a family reunion, stem and leaf plots make it possible for a lot of information to be shown more easily and with little confusion. The way this plot works is, the stem is the tens place and the leaf is the ones place, for example if your stem is 5 and your leaf is 1 the age of that person is 51.
A scatter plot compares two pieces of information, this scatter plot compares the wife's age versus the husband's age. If a trend line was placed on this graph it would be relatively straight and show a positive relationship, with a few outliers.
A bilateral graph shows related information, for example this graph shows how unemployment decreases and number of jobs increases after Bush's Jobs and Growth Act. The area to the left shows a natural decrease because unemployment is high and jobs are low, to the right you see a natural increase because unemployment is low and jobs increase.
Line graphs show data over time, they can either show raw data, an average trend line, or both. This graph shows raw data for the Dow Jones from 1985 to 2005.
