Spearman Rank Correlation Calculator
Calculate Spearman rank correlation coefficient.
Spearman rho
0.878788
Spearman rho vs Number of Pairs
公式
## Spearman Rank Correlation **rho = 1 - 6*Sum(d^2)/[n(n^2-1)]** Measures monotonic relationship between ranked variables.
计算示例
10 pairs, Sum d^2=20.
- 01rho = 1 - 120/990 = 0.8788
常见问题
When vs Pearson?
When data are ordinal or non-linear monotonic.
Range?
-1 to +1.
Strong?
|rho| > 0.7 is strong.
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