Also known as a box-and-whisker plot. A popular way of graphically depicting groups of numerical data through their five-number summaries: the smallest observation (sample minimum), lower quartile (Q1), median (Q2), upper quartile (Q3), and largest observation (sample maximum). A boxplot may also indicate which observations, if any, might be outliers. A non-parametric descriptive statistic (i.e. makes no assumptions about the probability distribution of the population).
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