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Rank-biserial correlation

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Abstract

A formula is developed for the correlation between a ranking (possibly including ties) and a dichotomy, with limits which are always ±1. This formula is shown to be equivalent both to Kendall'sτ and Spearman'sρ.

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References

  1. Durbin, J. and Stuart, A. Inversions and rank correlation coefficients.J. roy. statist. Soc., 1951,13, 303–9.

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  2. Kendall, M. G. Rank correlation methods. London, Charles Griffin and Co., 1948, Ch. 3.

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Cureton, E.E. Rank-biserial correlation. Psychometrika 21, 287–290 (1956). https://doi.org/10.1007/BF02289138

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  • DOI: https://doi.org/10.1007/BF02289138

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