Quality Advisor

Your proof of quality™ resource

Chi-square formula and degrees of freedom table

chi square formula

chi square formula symbols

Alpha value = 5% 

Alpha value = 1%
Degrees of freedom
Value
Degrees of freedom
Value
1
3.84
1
6.63
2
5.99
2
9.21
3
7.82
3
11.3
4
9.49
4
13.3
5
11.10
5
15.1
6
12.60
6
16.8
7
14.10
7
18.5
8
15.50
8
20.1
9
16.90
9
23.2
10
18.30
10
24.7
11
19.70
11
26.2
12
21.00
12
27.7
13
22.40
13
29.1
14
23.70
14
30.6
15
25.00
15
30.6
16
26.30
16
32.0
17
27.60
17
33.4
18
28.90
18
34.8
19
30.10
19
36.2
20
31.40
20
37.6
21
32.70
21
38.9
22
33.90
22
40.3
23
35.20
23
41.6
24
36.40
24
43.0
25
37.70
25
44.3
26
38.90
26
45.6
27
40.10
27
47.0
28
41.30
28
48.3
29
42.60
29
49.6
30
43.80
30
50.9

Free monthly quality tips

FREE Newsletter on training tips, statistical help, book reviews and new product informationSubscribe to our free monthly newsletter, Quality eLine. It offers quality improvement information, quality training tips, statistical process control help, gage R&R information, and more.

Subscribe