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Cochran's C


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In statistics, a test of the assumption of homogeneity of variance required by procedures such as analysis of variance (ANOVA), namely that several groups come from populations with the same variance. Cochran's C test is based on the ratio of the largest group variance to the sum of all the group variances. [Named after the Scottish statistician William Gemmell Cochran (1909–80) who developed the test in 1947]

Subjects: Psychology.


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