Appendix E: Table E

Table E: Critical Values for the Pearson's Product-Moment Correlation Coefficient (r)

	Levels of significance for a one-tailed test
	.10	.05	.025	.01	.005	.0005
	Levels of significance for a two-tailed test
n	.20	.10	.05	.02	.01	.001
3	.951	.988	.997	1.000	1.000	1.000
4	.800	.900	.950	.980	.990	.999
5	.687	.805	.878	.934	.959	.991
6	.608	.729	.811	.882	.917	.974
7	.551	.669	.754	.833	.875	.951
8	.507	.621	.707	.789	.834	.925
9	.472	.582	.666	.750	.798	.898
10	.443	.549	.632	.715	.765	.872
11	.419	.521	.602	.685	.735	.847
12	.398	.497	.576	.658	.708	.823
13	.380	.476	.553	.634	.684	.801
14	.365	.457	.532	.612	.661	.780
15	.351	.441	.514	.592	.641	.760
16	.338	.426	.497	.574	.623	.742
17	.327	.412	.482	.558	.606	.725
18	.317	.400	.468	.543	.590	.708
19	.308	.389	.456	.529	.575	.693
20	.299	.378	.444	.516	.561	.679
21	.291	.369	.433	.503	.549	.665
22	.284	.360	.423	.492	.537	.652
23	.277	.352	.413	.482	.526	.640
24	.271	.344	.404	.472	.515	.629
25	.265	.337	.396	.462	.505	.618
26	.260	.330	.388	.453	.496	.607
27	.255	.323	.381	.445	.487	.597
28	.250	.317	.374	.437	.479	.588
29	.245	.311	.367	.430	.471	.579
30	.241	.306	.361	.423	.463	.570
32	.233	.296	.349	.409	.449	.554
42	.202	.257	.304	.345	.393	.490
52	.181	.231	.274	.322	.355	.444
62	.165	.211	.250	.295	.325	.408
72	.152	.193	.228	.268	.294	.391
82	.142	.181	.214	.252	.277	.345
92	.134	.171	.202	.238	.262	.328
102	.128	.162	.192	.227	.250	.313
122	.116	.149	.178	.208	.229	.288
Critical values computed by John Timko. Used by permission.