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Pearson Correlation Coefficient (r) is used for measuring the linear dependence of two variables.
Pearson Correlation Coefficient Formula:
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Where:
xi:
the ith number of x
yi:
the ith number of y
n:
total numbers of x or y
r:
correlation coefficient, -1 <= r <= 1, 1 represents strongly positively correlated, -1 represents strongly negatively correlated, 0 represents no correlation.