covariance

Covariance formula

Covariance Formula. The formula for covariance is: {eq}Cov(x,y) = [Σ (x_i - x̄) * (y_i - ȳ)]/n-1 {/eq}, where: {eq}x_i {/eq} = value of the data point x {eq}x̄ {/eq}= mean (average) of x