Teaching EMRS PGT Mock Test 2023 Mathematics Statistics Correlation and Regression

Pearson's correlation coefficient = _________________. (S represents standard deviation)

1
(Sx.Sy)/Covariance(x,y)
2
Covariance2(x,y)/(Sx.Sy)
3
(Sx.Sy)2/Covariance(x,y)
4
Covariance(x,y)/(Sx.Sy)
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