distribution free statistic
Noun

A statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn (synset 106032076)
domain category: statistics  a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametershypernym: statistic  a datum that can be represented numericallyhyponym:
 rankdifference correlation, rankdifference correlation coefficient, rankorder correlation, rankorder 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)
 fourfold point correlation, phi coefficient, phi correlation  an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., malefemale)
synonym: nonparametric statistic
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