BoxWhiskerPlot creates a plot with a box that spans the distance between two quantiles surrounding the median with lines ("whiskers") that extend to span either the full data set or the data set excluding outliers.
The default box spans from the .25 quantile to the .75 quantile.
Quantiles used are equivalent to those computed using Quantile.
Near outliers are defined as points beyond times the interquantile range from the edge of the box. Far outliers are defined as points beyond three times that range.
BoxWhiskerPlot has the same options as Graphics, with the following additions and changes: