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Question

Two ladies were asked to rank ten different types of cell phones. The ranks given by them are given below:

Cell PhoneABCDEFGHIJTina16395271084Rita68372159410

Calculate Spearman's rank correlation coefficient.

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Solution

RankRankD=R1R2D2R1R2165256824330097245239211175241091184416410636N=10D=0D2=100
Spearman's rank coefficient = rk=16D2N3N
rk=16×10010310 =160099010.606=0.394


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