Spearman秩相关系数计算器
计算Spearman秩相关系数，衡量两个变量之间的单调关系强度和方向，适用于有序数据的非参数相关分析。
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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