Uploaded October 2025 | Updated September 2026, 31 minutes ago

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Kendall’s Tau is a rank correlation coefficient that measures how well two variables move together by comparing the order of their pairs. In this video, you’ll learn what Tau means (from −1 to +1), how it differs from Spearman’s rho, and why it’s robust for ordinal data and small samples. We’ll walk through a simple example with ties and show when to use Tau-a vs. Tau-b in practice.