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Maths-

General

Easy

Question

Karl Pearson's correlation coefficient between x and y for the following data will be approximately

0.40
– 0.40
0.44
None of these

The correct answer is: 0.44

Use $r equals fraction numerator sum left parenthesis x minus stack x with ̄ on top right parenthesis left parenthesis y minus stack y with ̄ on top right parenthesis over denominator square root of sum left parenthesis x minus stack x with ̄ on top right parenthesis to the power of 2 end exponent sum left parenthesis y minus stack y with ̄ on top right parenthesis to the power of 2 end exponent end root end fraction$ .

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