A nominal choropleth map is a choropleth map of a geographical area that shows areas that can be represented by different names for example. A map of the United States showing state boundaries and assigning different colors to each state is an example of this.http://www.factmonster.com/states.html
Similarity matrices show the relative similarity between two things. This similarity matrix shows the similarities between genes. The same list of genes is across the x and the y axis of the graph. The relative similarity is shown by the lightness or darkness of the color that corresponds to two different genes on the graph. The location that corresponds to the same gene is shown as a white box with a black line through it.http://www.biomedcentral.com/1471-2164/8/353/figure/F5?highres=y
A stem and leaf plot shows a set of classes such as ages split up into decades and then to the right of each class or "age" would be each individual separated into their age class. This stem and leaf plot would show the ages of 24 different people. To the left of the diagram is their age class. The "2" for example represents all individuals who's age begins with 2. To the right of the diagram is a lit of these individuals from 22 through 29.http://academic.kellogg.edu/secristb/Math%20130%20Online/Course%20Notes/Session_3_Notes.htm
Box plots are graphical representation that show numerical values of different classes and separate values for individual classes into a minimum value of the set up to the lower quartile, median, upper quartile, maximum and then show the upper and lower outlying values or "outliers". http://www.lohninger.com/boxplot.html
A histogram is simply a graphical representation of data as bars across an x-axis and different values of each class is represented by it's length up the y-axis. This histogram shows the grades on an exam divided into ranges and assigned colors and their value is equal to the corresponding location along the y-axis.http://searchsoftwarequality.techtarget.com/definition/histogram
A star plot is a graphical tool used to show the relativity of many different variables. This star plot shows the "amounts" of each of the seven variables for the five different classes. One line representing one class shows a value of the variable relative to it's distance from the center of the "star".http://en.wikipedia.org/wiki/File:MER_Star_Plot.gif
