Star plots make it possible to visualize and compare multiple variables at once from each particular observation. Each variable is depicted as a radius stemming from a center point and all radii may and most likely will be of different lengths. These are star plots of fifteen different cars, each with 9 radii so each observation held 9 different variables. The variables (note the radii numerical guide of the AMC Concord plot) were, in this order from 1-9: price, mileage (MPG), 1978 repair record, 1977 repair record, headroom, rear seat room, trunk space, weight, and length. So, while noting all of these variables for each car, star plots help to visually compare each variable for each car.
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