|
STUDENT'S t PROBABILITY
TABLE
The table shows the t-score with the given area to its left:

|
Area |
0.90 |
0.95 |
0.975 |
0.99 |
0.995 |
|
(total area in tails of a
two-tailed test) |
0.20 |
0.10 |
0.05 |
0.02 |
0.01 |
|
(confidence interval) |
0.80 |
0.90 |
0.95 |
0.98 |
0.99 |
| |
|
|
|
|
|
|
degrees of freedom |
|
|
|
|
|
|
1 |
3.08 |
6.31 |
12.71 |
31.82 |
63.66 |
|
2 |
1.89 |
2.92 |
4.30 |
6.96 |
9.93 |
|
3 |
1.64 |
2.35 |
3.18 |
4.54 |
5.84 |
|
4 |
1.53 |
2.13 |
2.78 |
3.75 |
4.60 |
|
5 |
1.48 |
2.02 |
2.57 |
3.36 |
4.03 |
|
6 |
1.44 |
1.94 |
2.45 |
3.14 |
3.71 |
|
7 |
1.41 |
1.89 |
2.36 |
3.00 |
3.50 |
|
8 |
1.40 |
1.86 |
2.31 |
2.90 |
3.36 |
|
9 |
1.38 |
1.83 |
2.26 |
2.82 |
3.25 |
|
10 |
1.37 |
1.81 |
2.23 |
2.76 |
3.17 |
|
11 |
1.36 |
1.80 |
2.20 |
2.72 |
3.11 |
|
12 |
1.36 |
1.78 |
2.18 |
2.68 |
3.06 |
|
13 |
1.35 |
1.77 |
2.16 |
2.65 |
3.01 |
|
14 |
1.35 |
1.76 |
2.14 |
2.62 |
2.98 |
|
15 |
1.34 |
1.75 |
2.13 |
2.60 |
2.95 |
|
16 |
1.34 |
1.75 |
2.12 |
2.58 |
2.92 |
|
17 |
1.33 |
1.74 |
2.11 |
2.57 |
2.90 |
|
18 |
1.33 |
1.73 |
2.10 |
2.55 |
2.88 |
|
19 |
1.33 |
1.73 |
2.09 |
2.54 |
2.86 |
|
20 |
1.33 |
1.72 |
2.09 |
2.53 |
2.84 |
|
21 |
1.32 |
1.72 |
2.08 |
2.52 |
2.83 |
|
22 |
1.32 |
1.72 |
2.07 |
2.51 |
2.82 |
|
23 |
1.32 |
1.71 |
2.07 |
2.50 |
2.81 |
|
24 |
1.32 |
1.71 |
2.06 |
2.49 |
2.80 |
|
25 |
1.32 |
1.71 |
2.06 |
2.49 |
2.80 |
|
26 |
1.31 |
1.71 |
2.06 |
2.48 |
2.78 |
|
27 |
1.31 |
1.70 |
2.05 |
2.47 |
2.77 |
|
28 |
1.31 |
1.70 |
2.05 |
2.47 |
2.76 |
|
29 |
1.31 |
1.70 |
2.05 |
2.46 |
2.76 |
|
30 |
1.31 |
1.70 |
2.04 |
2.46 |
2.75 |
|
40 |
1.30 |
1.68 |
2.02 |
2.42 |
2.70 |
|
infinite = Z |
1.28
|
1.64
|
1.96
|
2.33
|
2.58 |
Thanks to: http://www.sjsu.edu/faculty/gerstman/EpiInfo/t-table.htm
|