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Table 3 Percentage points of the χ2 distribution produced on a spreadsheet

From: Statistics review 8: Qualitative data – tests of association

 

χ2 values for the probabilities (P)

Degrees of freedom

0.1

0.05

0.01

0.001

1

2.71

3.84

6.63

10.83

2

4.61

5.99

9.21

13.82

3

6.25

7.81

11.34

16.27

4

7.78

9.49

13.28

18.47

5

9.24

11.07

15.09

20.52

6

10.64

12.59

16.81

22.46

7

12.02

14.07

18.48

24.32

8

13.36

15.51

20.09

26.12

9

14.68

16.92

21.67

27.88

10

15.99

18.31

23.21

29.59

11

17.28

19.68

24.72

31.26

12

18.55

21.03

26.22

32.91

13

19.81

22.36

27.69

34.53

14

21.06

23.68

29.14

36.12

15

22.31

25.00

30.58

37.70

16

23.54

26.30

32.00

39.25

17

24.77

27.59

33.41

40.79

18

25.99

28.87

34.81

42.31

19

27.20

30.14

36.19

43.82

20

28.41

31.41

37.57

45.31

25

34.38

37.65

44.31

52.62