dummy The formula for Spearman's rank coefficient is ___

$r_{k} = \frac{1 - 6 \sum D_{i}^{2}}{n^{3} - n}$

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$r_{k} = \frac{1 - 6 \sum D_{i}^{2}}{n^{2} - n}$

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$r_{k} = 1 - \frac{6 \sum D_{i}^{2}}{n^{2} - n}$

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$r_{k} = 1 - \frac{6 \sum D_{i}^{2}}{n^{3} - n}$

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Solution

The correct option is D
$r_{k} = 1 - \frac{6 \sum D_{i}^{2}}{n^{3} - n}$

The Spearman's rank coefficient is given by the formula
$r_{k} = 1 - \frac{6 \sum D_{i}^{2}}{n^{3} - n}$

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