Таблица критических точек распределения Пирсона «хи-квадрат»)

k /α 0,01 0,025 0,05 0,95 0,975 0,99
1 6,63490 5,02389 3,84146 0,00393 0,00098 0,00016
2 9,21034 7,37776 5,99146 0,10259 0,05064 0,02010
3 11,34487 9,34840 7,81473 0,35185 0,21580 0,11483
4 13,2767 11,14329 9,48773 0,71072 0,48442 0,29711
5 15,08627 12,8325 11,0705 1,14548 0,83121 0,55430
6 16,81189 14,44938 12,59159 1,63538 1,23734 0,87209
7 18,47531 16,01276 14,06714 2,16735 1,68987 1,23904
8 20,09024 17,53455 15,50731 2,73264 2,17973 1,64650
9 21,66599 19,02277 16,91898 3,32511 2,70039 2,08790
10 23,20925 20,48318 18,30704 3,94030 3,24697 2,55821
11 24,72497 21,92005 19,67514 4,57481 3,81575 3,05348
12 26,21697 23,33666 21,02607 5,22603 4,40379 3,57057
13 27,68825 24,7356 22,36203 5,89186 5,00875 4,10692
14 29,14124 26,11895 23,68479 6,57063 5,62873 4,66043
15 30,57791 27,48839 24,99579 7,26094 6,26214 5,22935
16 31,99993 28,84535 26,29623 7,96165 6,90766 5,81221
17 33,40866 30,19101 27,58711 8,67176 7,56419 6,40776
18 34,80531 31,52638 28,86930 9,39046 8,23075 7,01491
19 36,19087 32,85233 30,14353 10,11701 8,90652 7,63273
20 37,56623 34,16961 31,41043 10,85081 9,59078 8,26040
21 38,93217 35,47888 32,67057 11,59131 10,2829 8,89720
22 40,28936 36,78071 33,92444 12,33801 10,98232 9,54249
23 41,63840 38,07563 35,17246 13,09051 11,68855 10,19572
24 42,97982 39,36408 36,41503 13,84843 12,40115 10,85636
25 44,31410 40,64647 37,65248 14,61141 13,11972 11,52398
26 45,64168 41,92317 38,88514 15,37916 13,84391 12,19815
27 46,96294 43,19451 40,11327 16,15140 14,57338 12,87850
28 48,27824 44,46079 41,33714 16,92788 15,30786 13,56471
29 49,58788 45,72229 42,55697 17,70837 16,04707 14,25645
30 50,89218 46,97924 43,77297 18,49266 16,79077 14,95346
31 52,19139 48,23189 44,98534 19,28057 17,53874 15,65546
32 53,48577 49,48044 46,19426 20,07191 18,29076 16,36222
33 54,77554 50,72508 47,39988 20,86653 19,04666 17,07351
34 56,06091 51,96600 48,60237 21,66428 19,80625 17,78915
35 57,34207 53,20335 49,80185 22,46502 20,56938 18,50893
36 58,61921 54,43729 50,99846 23,26861 21,33588 19,23268
37 59,89250 55,66797 52,19232 24,07494 22,10563 19,96023
38 61,16209 56,89552 53,38354 24,8839 22,87848 20,69144
39 62,42812 58,12006 54,57223 25,69539 23,65432 21,42616
40 63,69074 59,34171 55,75848 26,5093 24,43304 22,16426
41 64,95007 60,56057 56,94239 27,32555 25,21452 22,90561
42 66,20624 61,77676 58,12404 28,14405 25,99866 23,65009
43 67,45935 62,99036 59,30351 28,96472 26,78537 24,39760
44 68,70951 64,20146 60,48089 29,78748 27,57457 25,14803
45 69,95683 65,41016 61,65623 30,61226 28,36615 25,90127
46 71,20140 66,61653 62,82962 31,43900 29,16005 26,65724
47 72,44331 67,82065 64,00111 32,26762 29,95620 27,41585
48 73,68264 69,02259 65,17077 33,09808 30,75451 28,17701
49 74,91947 70,22241 66,33865 33,93031 31,55492 28,94065
50 76,15389 71,42020 67,50481 34,76425 32,35736 29,70668


Обычно такая точность (5 знаков после запятой) не требуется. Достаточно 1-2 знаков после запятой.