Sort your data (X) from lowest to highest. Compute the percentiles (Y). Set up a scale on the "value" axis appropriate for showing your data. Plot each datum as a point with X = value, Y = percentile. To find the plotting position for Y, interpolate among the values shown at the right.
Return to the Environmental Statistics home page
This page is copyright (c) 2001 Quantitative Decisions. Please cite it as
Last updated 4 February 2001.