Correlation Co-efficient Formula - Correlation And Regression

Correlation Coefficient Formula :

Correlation(r) = NΣXY - (ΣX)(ΣY) / Sqrt([NΣX2 - (ΣX)2][NΣY2 - (ΣY)2])


N = Number of Values or Elements
X = First Score
Y = Second Score
ΣXY = Sum of the Product of First and Second Scores
ΣX = Sum of First Scores
ΣY = Sum of Second Scores
ΣX2 = Sum of Square of First Scores
ΣY2 = Sum of Square of Second Scores

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