nonparametric statistic

1. A statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn (synset 106032076)
   referred to in: 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
   is a type of: statistic - a datum that can be represented numerically
   subtypes:

   • 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)
   • 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., male-female)
   same as: distribution free statistic

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