t-Table
Upper-tail critical values of Student's t distribution.
| df | α=0.1 | α=0.05 | α=0.025 | α=0.01 |
|---|---|---|---|---|
| 1 | 3.078 | 6.314 | 12.706 | 31.821 |
| 2 | 1.886 | 2.920 | 4.303 | 6.965 |
| 3 | 1.638 | 2.353 | 3.182 | 4.541 |
| 4 | 1.533 | 2.132 | 2.776 | 3.747 |
| 5 | 1.476 | 2.015 | 2.571 | 3.365 |
| 6 | 1.440 | 1.943 | 2.447 | 3.143 |
| 7 | 1.415 | 1.895 | 2.365 | 2.998 |
| 8 | 1.397 | 1.860 | 2.306 | 2.896 |
| 9 | 1.383 | 1.833 | 2.262 | 2.821 |
| 10 | 1.372 | 1.812 | 2.228 | 2.764 |
| 12 | 1.356 | 1.782 | 2.179 | 2.681 |
| 15 | 1.341 | 1.753 | 2.131 | 2.602 |
| 20 | 1.325 | 1.725 | 2.086 | 2.528 |
| 30 | 1.310 | 1.697 | 2.042 | 2.457 |
| 40 | 1.303 | 1.684 | 2.021 | 2.423 |
| 60 | 1.296 | 1.671 | 2.000 | 2.390 |
| 120 | 1.289 | 1.658 | 1.980 | 2.358 |