http://www.itl.nist.gov/div898/handbook/eda/section3/starplot.htm
The star plot consists of a sequence of equi-angular spokes, called radii, with each spoke representing one of the variables. A star plot is a graphical method of displaying multivariate data in the form of a two-dimensional chart or three or more quantitative variables represented on axes starting from the same point. Each star represents a single observation. The example above is a star plot containing 16 cars and helps display each car's strengths and weaknesses.
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