Correlation Matrix: Stock Portfolio

Source: http://seekingalpha.com/article/97777-dont-pull-out-of-the-markets-diversify-into-uncorrelated-assets

A correlation matrix is a map of two different variables plotted to discover a linear correlation between the two different sets of data by using statistics. In this correlation matrix the relationship between stocks and overall return is depicted to help grasp a better understanding of the risk factor involved with stocks as well as setting up a good "portfolio".

Similarity Matrix: Amino Acid

Source: http://mendel.ethz.ch:8080/Server/ServerBooklet/section2_14.html

A similarity matrix are used to identify the similarities between data numbers and points. In this particular matrix, the amino acid is being monitored over time to deduce the similarities between numbers in certain amino acids over a certain period of time. It is intended to reveal a pattern in numbers or recognize some sort of similarity between variables.

Stem and Leaf Plot: GNP Western Africa

Source: http://mainland.cctt.org/mathsummer/JosephBond/StemAndPlots/stem-and-leaf_std.htm

http://www.purplemath.com/modules/stemleaf.htm

A stem and leaf plot is a way to plot information and the frequency in which it occurs. The stem is the variable and the leaf is the number of times it occurs. These graphs can then be plotted into a histogram to produce more understandable data. In this stem and leaf plot the per capita of the GNP in Western Africa is depicted. 

Box Plot: Energy Output

Source: http://www.itl.nist.gov/div898/handbook/eda/section3/boxplot.htm

http://www.stat.yale.edu/Courses/1997-98/101/boxplot.htm

A box plot is a way of graphing data into groups or intervals. It is a way of making data much easier to interpret. This box plot shows four different machines and the energy they displace. Each box represents the different machines and their size is determined by the energy output. This is graphed and expressed making it easy to understand that machine number three is the largest in energy output.

Histogram: Greek Tragedies

Source: http://www.chlt.org/StatisticalMethods/histograms.html

http://www.mathsisfun.com/data/histograms.html

Histograms are a type of map that uses bar graphs to display data. In this histogram the length of a greek tragedy based on how many words there are is compared to the years in which they were made. From this map we can determine that the longest plays were in 800 B.C.

Parallel Coordinate Graph: Fish

Source: http://www.evl.uic.edu/aej/424/kyoung/Training-parallelcoordinate.html

Parallel coordinate graphs take any number of variables and plot them as a basic line graph and then use something called the N axis to create an "uniform" line on an axis. This, in turn, creates a three-dimensional graph of the variables at hand. In this graph, the length of three different fishes is compared and is seeing which variables affect one another.

Triangle Plot: Soil Samples

Source: http://www.dplot.com/triangle-plot.htm

A triangle plot takes three different variables and compares them on one graph. Each variable is graphed on a two-dimensional triangular graph and can be applied to any three variables. This map is explaining how to plot a triangular plot using different soil content to decide weather or not the soil sample is composed of clay, sand, or silt.