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Box plot

In descriptive statistics, a box plot is a convenient way of graphically depicting the five-number summary, which consists of the smallest observation, lower quartile, median, upper quartile and largest observation.

The box plot may also identify outliers and possibly the mean.

A plain-text version might look like this:

                            +-----+-+
  *           o     --------|   + | |----
                            +-----+-+

+---+---+---+---+---+---+---+---+---+---+ 0 1 2 3 4 5 6 7 8 9 10

For this data set (values are approximate, based on the figure):