Critical Values

Critical values for the Spearman rank correlation coefficient **r_s**
number of pairs of measurements	critical value
number of pairs of measurements	P=0.1	P=0.05	P=0.01
7	0.714	0.786	0.929
8	0.643	0.738	0.881
9	0.600	0.683	0.833
10	0.564	0.648	0.794
12	0.506	0.591	0.777
14	0.456	0.544	0.715
16	0.425	0.506	0.665
18	0.399	0.475	0.625
20	0.377	0.450	0.591
22	0.359	0.428	0.562
24	0.343	0.409	0.537
26	0.329	0.392	0.515
28	0.317	0.377	0.496
30	0.306	0.364	0.478

αβγδεζηθικλμνξοπρςστυφχψω