A star plot allows one to observe data and how they relate for many different variables. In the figure above, the letters are the variables and the closer the line is to the variable, the stronger the measure of that variable.
Monday, July 23, 2012
Correlation Matrix
A correlation matrix is a matrix that shows the correlations between all pairs of data. Above is an example of a correlation matrix.
Similarity Matrix
A similarity matrix shows similarities between two things through color. In the case of this similarity matrix, the closer to red it is, the more similar they two things are, or the better their correlation (because its approaching 1, a perfect correlation).
Stem and Leaf Plot
A stem and leaf plot is a way of plotting data according to place value. This sort of plot allows you to see the shape and distribution of the data. In the plot above, you would read the first six numbers as: 1,8,9,32,34,37. So the stem is the base, and the leaf is the ones.
Boxplot
A boxplot is a way to represent data where you plot the maximum, minimum, upper quartile, lower quartile, and median. This allows you to see the shape of the distribution.
Histogram
A histogram is like a bar graph except the horizontal data is shown as data ranges. For example, rather than one of the horizontal values being 1, it would be 0 to 1, or 1 to 2. Above is an example of a histogram.
Parallel Coordinate Graph
A parallel coordinate graph shows the relationship of a series of values, each with different variables. Above is an example of a parallel coordinate graph.
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