In the absence of ties,Kendall's τ yields a closer approximation to the Pearson product moment correlation coefficient,ǫ,than Spearman's ǫs.

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Quizplus · Accepted Answer

Kendall's τ and Spearman's ρ are both rank-based correlation measures, but neither is inherently closer to Pearson's correlation coefficient, which measures linear relationships. The choice between Kendall's τ and Spearman's ρ depends on the data and context.

In the Absence of Ties,Kendall's τ Yields a Closer Approximation