Приложение 5
(справочное)
к Методическим указаниям МУ 2.6.1.715-98
Значения критерия Стьюдента t в зависимости от числа степеней
P
свободы (n - 1) и доверительной вероятности P
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
|n - 1| t | t |n - 1| t | t |n - 1| t | t |
| | 0.95 | 0.99 | | 0.95 | 0.99 | | 0.95 | 0.99 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 1 | | 63.657 | 13 | 2.160 | 3.012 | 25 | 2.060 | 2.787 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 2 | 4.303 | 9.925 | 14 | 2.145 | 2.977 | 26 | 2.056 | 2.779 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 3 | 3.182 | 5.841 | 15 | 2.131 | 2.947 | 27 | 2.052 | 2.771 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 4 | 2.776 | 4.604 | 16 | 2.120 | 2.921 | 28 | 2.048 | 2.763 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 5 | 2.571 | 4.032 | 17 | 2.110 | 2.898 | 29 | 2.045 | 2.756 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 6 | 2.447 | 3.707 | 18 | 2.101 | 2.878 | 30 | 2.043 | 2.750 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 7 | 2.365 | 3.499 | 19 | 2.093 | 2.861 | 40 | 2.021 | 2.704 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 8 | 2.306 | 3.355 | 20 | 2.086 | 2.845 | 60 | 2.000 | 2.660 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
| 9 | 2.262 | 3.250 | 21 | 2.080 | 2.831 |120 | 1.980 | 2.617 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
|10 | 2.228 | 3.169 | 22 | 2.074 | 2.819 |>120 | 1.960 | 2.576 |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
|11 | 2.201 | 3.106 | 23 | 2.069 | 2.807 | | | |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
|12 | 2.179 | 3.055 | 24 | 2.064 | 2.797 | | | |
+-----+--------+--------+-----+--------+--------+-----+--------+--------+
2 2 2
(Дельта - Дельта )
0 k
n = -------------------- - 2
эфф 4 4
Дельта Дельта
0 k
------- + -------
N + 1 N + 1
0 k
где: N и N - число повторных измерений на открытой местности (в
0 k пункте с наименьшим средним значением МЭД) в k-ом
помещении, соответственно.