Box Plot Calculator

This tool turns a list of numbers into a box and whisker plot and shows the numbers behind it. You get the five number summary, the interquartile range, the lower and upper fences, the outliers listed by value, and the whisker ends, which are the furthest values still inside the fences. A second tab draws several groups against one axis so the boxes can be compared. Pick the quartile method yourself, because the three methods in common use disagree on the same data.