The t distribution table values are critical values of the t distribution. The column header are the t distribution probabilities (alpha). The row names are the degrees of freedom (df).
Student t table gives the probability that the absolute t value with a given degrees of freedom lies above the tabulated value.
Example : with df = 10, for t=2.228, the probability is alpha=0.05
| df/α | 0.9 | 0.5 | 0.3 | 0.2 | 0.1 | 0.05 | 0.02 | 0.01 | 0.001 |
| 1 | 0.158 | 1 | 2 | 3.078 | 6.314 | 12.706 | 31.821 | 64 | 637 |
| 2 | 0.142 | 0.816 | 1.386 | 1.886 | 2.92 | 4.303 | 6.965 | 10 | 31.598 |
| 3 | 0.137 | 0.765 | 1.25 | 1.638 | 2.353 | 3.182 | 4.541 | 5.841 | 12.929 |
| 4 | 0.134 | 0.741 | 1.19 | 1.533 | 2.132 | 2.776 | 3.747 | 4.604 | 8.61 |
| 5 | 0.132 | 0.727 | 1.156 | 1.476 | 2.015 | 2.571 | 3.365 | 4.032 | 6.869 |
| 6 | 0.131 | 0.718 | 1.134 | 1.44 | 1.943 | 2.447 | 3.143 | 3.707 | 5.959 |
| 7 | 0.13 | 0.711 | 1.119 | 1.415 | 1.895 | 2.365 | 2.998 | 3.499 | 5.408 |
| 8 | 0.13 | 0.706 | 1.108 | 1.397 | 1.86 | 2.306 | 2.896 | 3.355 | 5.041 |
| 9 | 0.129 | 0.703 | 1.1 | 1.383 | 1.833 | 2.263 | 2.821 | 3.25 | 4.781 |
| 10 | 0.129 | 0.7 | 1.093 | 1.372 | 1.812 | 2.228 | 2.764 | 3.169 | 4.587 |
| 11 | 0.129 | 0.697 | 1.088 | 1.363 | 1.796 | 2.201 | 2.718 | 3.106 | 4.437 |
| 12 | 0.128 | 0.695 | 1.083 | 1.356 | 1.782 | 2.179 | 2.681 | 3.055 | 4.318 |
| 13 | 0.128 | 0.694 | 1.079 | 1.35 | 1.771 | 2.16 | 2.65 | 3.012 | 4.221 |
| 14 | 0.128 | 0.692 | 1.076 | 1.345 | 1.761 | 2.145 | 2.624 | 2.977 | 4.14 |
| 15 | 0.128 | 0.691 | 1.074 | 1.341 | 1.753 | 2.131 | 2.602 | 2.947 | 4.073 |
| 16 | 0.128 | 0.69 | 1.071 | 1.337 | 1.746 | 2.12 | 2.583 | 2.921 | 4.015 |
| 17 | 0.128 | 0.689 | 1.069 | 1.333 | 1.74 | 2.11 | 2.567 | 2.898 | 3.965 |
| 18 | 0.127 | 0.688 | 1.067 | 1.33 | 1.734 | 2.101 | 2.552 | 2.878 | 3.922 |
| 19 | 0.127 | 688 | 1.066 | 1.328 | 1.729 | 2.093 | 2.539 | 2.861 | 3.883 |
| 20 | 0.127 | 0.687 | 1.064 | 1.325 | 1.725 | 2.086 | 2.528 | 2.845 | 3.85 |
| 21 | 0.127 | 0.686 | 1.063 | 1.323 | 1.721 | 2.08 | 2.518 | 2.831 | 3.819 |
| 22 | 0.127 | 0.686 | 1.061 | 1.321 | 1.717 | 2.074 | 2.508 | 2.819 | 3.792 |
| 23 | 0.127 | 0.685 | 1.06 | 1.319 | 1.714 | 2.069 | 2.5 | 2.807 | 3.767 |
| 24 | 0.127 | 0.685 | 1.059 | 1.318 | 1.711 | 2.064 | 2.492 | 2.797 | 3.745 |
| 25 | 0.127 | 0.684 | 1.058 | 1.316 | 1.708 | 2.06 | 2.485 | 2.787 | 3.725 |
| 26 | 0.127 | 0.684 | 1.058 | 1.315 | 1.706 | 2.056 | 2.479 | 2.779 | 3.707 |
| 27 | 0.137 | 0.684 | 1.057 | 1.314 | 1.703 | 2.052 | 2.473 | 2.771 | 3.69 |
| 28 | 0.127 | 0.683 | 1.056 | 1.313 | 1.701 | 2.048 | 2.467 | 2.763 | 3.674 |
| 29 | 0.127 | 0.683 | 1.055 | 1.311 | 1.699 | 2.045 | 2.462 | 2.756 | 3.649 |
| 30 | 0.127 | 0.683 | 1.055 | 1.31 | 1.697 | 2.042 | 2.457 | 2.75 | 3.656 |
| 40 | 0.126 | 0.681 | 1.05 | 1.303 | 1.684 | 2.021 | 2.423 | 2.704 | 3.551 |
| 80 | 0.126 | 0.679 | 1.046 | 1.296 | 1.671 | 2 | 2.39 | 2.66 | 3.46 |
| 120 | 0.126 | 0.677 | 1.041 | 1.289 | 1.658 | 1.98 | 2.358 | 2.617 | 3.373 |
| Infini | 0.126 | 0.674 | 1.036 | 1.282 | 1.645 | 1.96 | 2.326 | 2.576 | 3.291 |
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See Also
T Distribution Table - StatCalculators.comStudent's t-Distribution Table - Stats Solver4 Ways to Rearrange Data in ExcelShow me some love with the like buttons below... Thank you and please don't forget to share and comment below!!
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