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Question

What is the formula to calculate Spearman's rank correlation coefficient when ranks are not repeated.

A
R=6d2in(n21)
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B
R=16d2in(n21)
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C
R=6d2in(n21)
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D
R=1+6d2in(n21)
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Solution

The correct option is A R=16d2in(n21)
When ranks are not repeated Speraman's rank coefficient =R=16d2in(n21)
n is the number of observations
di is the difference in rank for ith observation.
So option B is corrrect.

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