The Nonparametric Correlations menu offers three nonparametric measures. Each Nonparametric correlation report gives the significance probability for the measure of association and displays the association value on a bar chart.

is based on the number of concordant and discordant pairs of observations. A pair is concordant if the observation with the larger value of X also has the larger value of Y. A pair is discordant if the observation with the larger value of X has the smaller value of Y. There is a correction for tied pairs (pairs of observations that have equal values of X or equal values of Y).