Work out spearman rank correlation instantly with clear inputs, formula shown and shareable results.
Spearman's ρ is Pearson's correlation applied to the ranks rather than the raw values, so it detects any monotonic relationship and resists outliers. With no tied ranks the shortcut 1 − 6Σd²/(n(n² − 1)) gives the same answer.
Spearman's rho
ρ = Pearson correlation of the ranks = 1 − 6Σd² / (n(n² − 1)) when there are no ties
ρ ≈ −0.1758, a weak negative monotonic association.
When the relationship is monotonic but curved, or when outliers would distort Pearson's r.