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Correlation — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsCorrelation1 Mark
Question
Give the formula for computation of Karl Pearson's Coefficient of correlation, when deviations are taken from mean.
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Answer

Karl Pearson’s Coefficient of Correlation:$\text{r}=\frac{\Sigma\text{xy}}{\sqrt{\Sigma\text{x}^2\times\Sigma\text{y}^2}} \text{ where, x}=\text{X}-\overline{\text{X}},\text{y}=\text{Y}-\overline{\text{Y}}$

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