1. Exploratory Data Analysis
1.3. EDA Techniques
1.3.6. Probability Distributions
1.3.6.7. Tables for Probability Distributions

## Critical Values of the t* Distribution

How to Use This Table This table contains upper critical values of the t* distribution that are appropriate for determining whether or not a calibration line is in a state of statistical control from measurements on a check standard at three points in the calibration interval. A test statistic with ν degrees of freedom is compared with the critical value. If the absolute value of the test statistic exceeds the tabled value, the calibration of the instrument is judged to be out of control.
Upper critical values of t* distribution at significance level 0.05 for testing the output of a linear calibration line at 3 points
      ν                 ν

1     37.544            61      2.455
2      7.582            62      2.454
3      4.826            63      2.453
4      3.941            64      2.452
5      3.518            65      2.451
6      3.274            66      2.450
7      3.115            67      2.449
8      3.004            68      2.448
9      2.923            69      2.447
10      2.860            70      2.446
11      2.811            71      2.445
12      2.770            72      2.445
13      2.737            73      2.444
14      2.709            74      2.443
15      2.685            75      2.442
16      2.665            76      2.441
17      2.647            77      2.441
18      2.631            78      2.440
19      2.617            79      2.439
20      2.605            80      2.439
21      2.594            81      2.438
22      2.584            82      2.437
23      2.574            83      2.437
24      2.566            84      2.436
25      2.558            85      2.436
26      2.551            86      2.435
27      2.545            87      2.435
28      2.539            88      2.434
29      2.534            89      2.434
30      2.528            90      2.433
31      2.524            91      2.432
32      2.519            92      2.432
33      2.515            93      2.431
34      2.511            94      2.431
35      2.507            95      2.431
36      2.504            96      2.430
37      2.501            97      2.430
38      2.498            98      2.429
39      2.495            99      2.429
40      2.492           100      2.428
41      2.489           101      2.428
42      2.487           102      2.428
43      2.484           103      2.427
44      2.482           104      2.427
45      2.480           105      2.426
46      2.478           106      2.426
47      2.476           107      2.426
48      2.474           108      2.425
49      2.472           109      2.425
50      2.470           110      2.425
51      2.469           111      2.424
52      2.467           112      2.424
53      2.466           113      2.424
54      2.464           114      2.423
55      2.463           115      2.423
56      2.461           116      2.423
57      2.460           117      2.422
58      2.459           118      2.422
59      2.457           119      2.422
60      2.456           120      2.422