Illustration 15.16. A group of ten workers Of a factory is ranke according to their efficiency by two different judges as follows: Judgement of Judge A Judgement of Judge B Name of Worker A 4 3 8 6 D 7 5 E 1 1 F 3 2 G 2 4 H 5 7 I 10 J 9 10 Compute the coefficient of rank correlation.

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