Extract of the table of the t-statistic values. The first column lists the degrees of freedom (df). The headings of the other columns give probabilities for t to lie within the two tails of the distribution.
| df | 0.1 | 0.05 | 0.01 | 0.001 |
|---|---|---|---|---|
| 1 | 6.314 | 12.706 | 63.657 | 636.619 |
| 5 | 2.015 | 2.571 | 4.032 | 6.869 |
| 10 | 1.812 | 2.228 | 3.169 | 4.587 |
| 15 | 1.753 | 2.131 | 2.947 | 4.073 |
| 20 | 1.725 | 2.086 | 2.845 | 3.850 |
| 30 | 1.697 | 2.042 | 2.750 | 3.646 |
| 43 | 1.681 | 2.017 | 2.695 | 3.532 |