t Distribution Table

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t Distribution (Critical Values)

t Distribution (Critical Values)
Degrees of Freedom	Area in One Tail					Area in Two Tails
Degrees of Freedom	0.005	0.01	0.025	0.05	0.10	0.01	0.02	0.05	0.10	0.20
1	63.657	31.821	12.706	6.314	3.078	63.657	31.821	12.706	6.314	3.078
2	9.925	6.965	4.303	2.920	1.886	9.925	6.965	4.303	2.920	1.886
3	5.841	4.541	3.182	2.353	1.638	5.841	4.541	3.182	2.353	1.638
4	4.604	3.747	2.776	2.132	1.533	4.604	3.747	2.776	2.132	1.533
5	4.032	3.365	2.571	2.015	1.476	4.032	3.365	2.571	2.015	1.476
6	3.707	3.143	2.447	1.943	1.440	3.707	3.143	2.447	1.943	1.440
7	3.499	2.998	2.365	1.895	1.415	3.499	2.998	2.365	1.895	1.415
8	3.355	2.896	2.306	1.860	1.397	3.355	2.896	2.306	1.860	1.397
9	3.250	2.821	2.262	1.833	1.383	3.250	2.821	2.262	1.833	1.383
10	3.169	2.764	2.228	1.812	1.372	3.169	2.764	2.228	1.812	1.372
11	3.106	2.718	2.201	1.796	1.363	3.106	2.718	2.201	1.796	1.363
12	3.055	2.681	2.179	1.782	1.356	3.055	2.681	2.179	1.782	1.356
13	3.012	2.650	2.160	1.771	1.350	3.012	2.650	2.160	1.771	1.350
14	2.977	2.624	2.145	1.761	1.345	2.977	2.624	2.145	1.761	1.345
15	2.947	2.602	2.131	1.753	1.341	2.947	2.602	2.131	1.753	1.341
16	2.921	2.583	2.120	1.746	1.337	2.921	2.583	2.120	1.746	1.337
17	2.898	2.567	2.110	1.740	1.333	2.898	2.567	2.110	1.740	1.333
18	2.878	2.552	2.101	1.734	1.330	2.878	2.552	2.101	1.734	1.330
19	2.861	2.539	2.093	1.729	1.328	2.861	2.539	2.093	1.729	1.328
20	2.845	2.528	2.086	1.725	1.325	2.845	2.528	2.086	1.725	1.325
25	2.787	2.485	2.060	1.708	1.316	2.787	2.485	2.060	1.708	1.316
30	2.750	2.457	2.042	1.697	1.310	2.750	2.457	2.042	1.697	1.310
40	2.704	2.423	2.021	1.684	1.303	2.704	2.423	2.021	1.684	1.303
60	2.660	2.390	2.000	1.671	1.296	2.660	2.390	2.000	1.671	1.296
120	2.617	2.358	1.980	1.658	1.289	2.617	2.358	1.980	1.658	1.289
∞	2.576	2.326	1.960	1.645	1.282	2.576	2.326	1.960	1.645	1.282