What is "box and whiskers plot"

alt. (context statistics English) A graphical summary of a numerical data sample through five statistics — median, upper quartile, lower quartile(,) and upper extreme and lower extreme values — by depiction as a box with its edges at the quartile marks and an internal line at the median and with lines protruding from the box as far as the extremal values. n. (context statistics English) A graphical summary of a numerical data sample through five statistics — median, upper quartile, lower quartile(,) and upper extreme and lower extreme values — by depiction as a box with its edges at the quartile marks and an internal line at the median and with lines protruding from the box as far as the extremal values.