distribution free statistic
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|Noun||1.||distribution free statistic - a statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn|
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
statistic - a datum that can be represented numerically
rank-difference correlation, rank-difference correlation coefficient, rank-order correlation, rank-order correlation coefficient - the most commonly used method of computing a correlation coefficient between the ranks of scores on two variables
Kendall test - any of several nonparametric measures of correlation (used when the assumptions of standard correlational analysis are not met)