Critical Values of Student’s t
|
2-tailed t-tests |
|
|
df |
.05 alpha |
|
1 |
12.71 |
|
2 |
4.30 |
|
3 |
3.18 |
|
4 |
2.78 |
|
5 |
2.57 |
|
6 |
2.45 |
|
7 |
2.37 |
|
8 |
2.31 |
|
9 |
2.26 |
|
10 |
2.23 |
|
11 |
2.20 |
|
12 |
2.18 |
|
13 |
2.16 |
|
14 |
2.15 |
|
15 |
2.13 |
|
16 |
2.12 |
|
17 |
2.11 |
|
18 |
2.10 |
|
19 |
2.09 |
|
20 |
2.09 |
|
21 |
2.08 |
|
22 |
2.07 |
|
23 |
2.07 |
|
24 |
2.06 |
|
25 |
2.06 |
|
26 |
2.06 |
|
27 |
2.05 |
|
28 |
2.05 |
|
29 |
2.05 |
|
30 |
2.04 |
|
40 |
2.02 |
|
60 |
2.00 |
|
120 |
1.98 |
| infinity |
1.96 |
