Correlation Co-efficient Formula - Correlation And Regression

Calculator
Tutorial
Formula
Code

Correlation Coefficient Formula :

Correlation(r) = NÎ£XY - (Î£X)(Î£Y) / Sqrt([NÎ£X² - (Î£X)²][NÎ£Y² - (Î£Y)²])

Where,

N = Number of Values or Elements
X = First Score
Y = Second Score
Î£XY = Sum of the Product of First and Second Scores
Î£X = Sum of First Scores
Î£Y = Sum of Second Scores
Î£X² = Sum of Square of First Scores
Î£Y² = Sum of Square of Second Scores