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[[Image:R-speed of light boxplot.png|thumb|Box plot of data from the [[Michelson-Morley experiment]].]]
In [[descriptive statistics]], a '''boxplot''' (also known as a '''box-and-whisker diagram''') is a convenient way of graphically depicting the [[five-number summary]], which consists of the smallest non-[[outlier]] observation, lower [[quartile]], [[median]], upper [[quartile]] and largest non-outlier observation.
Boxplots are able to visually show different types of [[statistical population|populations]], without any assumptions of the [[probability distribution|statistical distribution]]. The spacings between the different parts of the box can help indicate [[variance]], [[skewness|skew]] and identify [[outlier]]s.
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