Upper-tail critical values of the t-distribution.

df α(2) = 0.2
α(1) = 0.1		 0.1
0.05		 0.05
0.025		 0.02
0.01		 0.01
0.005		 df
1 3.078 6.314 12.706 31.821 63.657 1
2 1.886 2.920 4.303 6.965 9.925 2
3 1.638 2.353 3.182 4.541 5.841 3
4 1.533 2.132 2.776 3.747 4.604 4
5 1.476 2.015 2.571 3.365 4.032 5
6 1.440 1.943 2.447 3.143 3.707 6
7 1.415 1.895 2.365 2.998 3.499 7
8 1.397 1.860 2.306 2.896 3.355 8
9 1.383 1.833 2.262 2.821 3.250 9
10 1.372 1.812 2.228 2.764 3.169 10
11 1.363 1.796 2.201 2.718 3.106 11
12 1.356 1.782 2.179 2.681 3.055 12
13 1.350 1.771 2.160 2.650 3.012 13
14 1.345 1.761 2.145 2.624 2.977 14
15 1.341 1.753 2.131 2.602 2.947 15
16 1.337 1.746 2.120 2.583 2.921 16
17 1.333 1.740 2.110 2.567 2.898 17
18 1.330 1.734 2.101 2.552 2.878 18
19 1.328 1.729 2.093 2.539 2.861 19
20 1.325 1.725 2.086 2.528 2.845 20
21 1.323 1.721 2.080 2.518 2.831 21
22 1.321 1.717 2.074 2.508 2.819 22
23 1.319 1.714 2.069 2.500 2.807 23
24 1.318 1.711 2.064 2.492 2.797 24
25 1.316 1.708 2.060 2.485 2.787 25
26 1.315 1.706 2.056 2.479 2.779 26
27 1.314 1.703 2.052 2.473 2.771 27
28 1.313 1.701 2.048 2.467 2.763 28
29 1.311 1.699 2.045 2.462 2.756 29
30 1.310 1.697 2.042 2.457 2.750 30
35 1.306 1.690 2.030 2.438 2.724 35
40 1.303 1.684 2.021 2.423 2.704 40
50 1.299 1.676 2.009 2.403 2.678 50
60 1.296 1.671 2.000 2.390 2.660 60
70 1.294 1.667 1.994 2.381 2.648 70
80 1.292 1.664 1.990 2.374 2.639 80
90 1.291 1.662 1.987 2.368 2.632 90
100 1.290 1.660 1.984 2.364 2.626 100
1000 1.282 1.646 1.962 2.330 2.581 1000
2000 1.282 1.646 1.961 2.328 2.578 2000