http://stn.spotfire.com/spotfire_client_help/box/box_what_is_a_box_plot.htm
The map displayed above is a box plot. Box plots are used to graphically display groups of numerical data through five number summaries. Box plots help display differences between many different populations. The spacings between the different spots on the box help convey the skewness in the data. Shown above is a box plot showing fruits and vegetables and there consumption rate by people.
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