A correlation can be calculated by adding each multiplied pair of z-scores together and dividing by degrees of freedom.

Question

Quizplus · Accepted Answer

The formula for calculating a correlation coefficient is:r = (Σ(z1 * z2)) / (n - 1)where:r is the correlation coefficientΣ is the sum ofz1 and z2 are the z-scores of the two variablesn is the number of observationsThe numerator of this formula is the sum of the multiplied pairs of z-scores. The denominator is the degrees of freedom, which is n - 1.

A Correlation Can Be Calculated by Adding Each Multiplied Pair