www.physics.csbsju.edu/A boxplot is graph that shows groups of numerical data. It shows central location, average, and measures of dispersion. Above is an example of a boxplot.
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http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=76
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camellia.shc.edu/.../
psyc.queensu.ca/
www.techmind.org/

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