Comparng a t Distribution with Five Degrees of Freedom
with the Standard Normal Distribution

Table of the Upper Percentage Points of the Student's t Distribution

df	Critical Values of Student's t
1-tailed	.10	.05	.025	.01	.005	.0005
2-tailed	.20	.10	.05	.02	.01	.001
1	3.078	6.314	12.706	31.821	63.657	636.619
2	1.886	2.920	4.303	6.965	9.925	31.598
3	1.683	2.353	3.182	4.5415	5.841	12.941
4	1.533	2.132	2.776	3.747	4.604	8.610
5	1.476	2.015	2.571	3.365	4.032	6.859
6	1.440	1.943	2.447	3.143	3.707	5.959
7	1.415	1.895	2.365	2.998	3.499	5.405
8	1.397	1.860	2.306	2.896	3.355	5.041
9	1.383	1.833	2.262	2.821	3.250	4.781
10	1.372	1.812	2.228	2.764	3.169	4.587
11	1.363	1.796	2.201	2.718	3.106	4.437
12	1.356	1.782	2.179	2.681	3.055	4.318
13	1.350	1.771	2.160	2.650	3.012	4.221
14	1.345	1.761	2.145	2.624	2.977	4.140
15	1.341	1.753	2.131	2.602	2.947	4.073
16	1.337	1.746	2.120	2.583	2.921	4.015
17	1.333	1.740	2.110	2.567	2.898	3.965
18	1.330	1.734	2.101	2.552	2.878	3.922
19	1.328	1.729	2.093	2.539	2.861	4.883
20	1.325	1.725	2.086	2.528	2.845	3.850
21	1.323	1.721	2.080	2.518	2.831	3.819
22	1.321	1.717	2.074	2.508	2.819	3.792
23	1.319	1.714	2.069	2.500	2.807	3.767
24	1.318	1.711	2.064	2.492	2.797	3.745
25	1.316	1.708	2.060	2.485	2.787	3.725
26	1.315	1.706	2.056	2.479	2.779	3.707
27	1.314	1.703	2.052	2.473	2.771	3.690
28	1.313	1.701	2.048	2.467	2.763	3.674
29	1.311	1.699	2.045	2.462	2.756	3.659
30	1.310	1.697	2.042	2.457	2.750	3.646
35	1.31	1.69	2.030	2.438	2.724	3.591
40	1.303	1.684	2.021	2.423	2.704	3.551
45	1.301	1.679	2.014	2.412	2.69	3.520
50	1.299	1.676	2.009	2.403	2.678	3.496
55	1.297	1.673	2.004	2.396	2.668	3.476
60	1.296	1.671	2.000	2.390	2.660	3.460
65	1.295	1.669	1.997	2.385	2.654	3.447
70	1.294	1.667	1.994	2.381	2.648	3.435
75	1.293	1.665	1.992	2.377	2.643	3.425
80	1.292	1.664	1.990	2.374	2.639	3.416
85	1.292	1.663	1.988	2.371	2.635	3.409
90	1.291	.662	1.987	2.368	2.632	3.402
95	1.291	1.661	1.985	2.366	2.629	3.396
100	1.290	1.660	1.984	2.364	2.626	3.390
120	1.289	1.658	1.980	2.358	2.617	3.373
Inf	1.282	1.645	1.960	2.236	2.576	3.291
1-tailed	.10	.05	.025	.01	.005	.0005
2-tailed	.20	.10	.05	.02	.01	.001