Kendall's Tau Calculator
Calculate rank correlation based on concordant and discordant pairs
About Kendall's Tau
Kendall's tau measures ordinal association between two variables.
τ-a: Ignores ties entirely
τ-b: Adjusts for ties (most commonly used)
τ-c: For rectangular contingency tables
Range: -1 to +1
Based on counting concordant vs discordant pairs of observations.