NEW!   Managing your gages is easy with the new GAGEpack 11.
Contact us
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.
Have questions? Click to chat with one of our service and support staff.
Home > Quality Advisor > Formulas and tables > Chi-square formula and degrees of freedom table
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