rank-difference correlation

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Noun

1.

rank-difference correlation - the most commonly used method of computing a correlation coefficient between the ranks of scores on two variables rank-difference correlation coefficient, rank-order correlation, rank-order correlation coefficient statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters distribution free statistic, nonparametric statistic - a statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn