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Maths-

General

Easy

Question

Karl Pearson's coefficient of rank correlation between the ranks obtained by ten students in Mathematics and Chemistry in a class test as given below is

0.224
0.204
0.240
None of these

The correct answer is: 0.224

Since $capital sigma d to the power of 2 end exponent equals 128$
Hence, $rho equals 1 minus fraction numerator 6 left parenthesis 128 right parenthesis over denominator 10 left parenthesis 100 minus 1 right parenthesis end fraction equals 0.224$

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