Figure 4. Box and whisker graph of the capillary density data.

On the vertical axis is capillary density (capillaries per mm^{2})
and the horizontal axis shows patient group, 'controls' and 'ulcers'.

For each group, a rectangular box is shown which repsents the central half of the points, with a horizontal line representing the median. Above and below the box vertical lines extend to shown the minimu and maximum observations. For 'ulcers', the upper line is truncated and very short, the highest value being represented by an isolated point.

Back to "How to Upset the Statistical Referee".

This page is maintained by Martin Bland

Last updated: 17 August, 2004.