Spearman's rank-order coefficient

Spearman's rank-order coefficient

(ˈspɪəmənz)
n
(Statistics) a statistic measuring the extent to which two sets of discrete data place the distinct items in the same order, given by rS = 16Σd2/n(n21), where Σd2 is the sum of the squares of the differences of ranks between the two orderings and n is the number of items in each. Also called: Spearman's rank-order correlation coefficient
[named after Charles E. Spearman (1863–1945), English mathematician and statistician]
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of Michigan) employs statistical analysis, particularly Spearman's Rank-Order coefficients, in order to assess the influence of key economic and social factors on the gross national product per capita of 10 to 31 (depending on data availability) industrialized countries.