Research Methods in Toxicology and Insecticide Resistance ...

Appendix C Table 1. The distribution of � 2 . a
Degrees of
freedom (df)
Probability
0.1 0.05 0.01 0.001
1 2.7 3.8 6.6 10.8
2 4.6 6.0 9.2 13.8
3 6.3 7.8 11.3 16.3
4 7.8 9.5 13.3 18.5
5 9.2 11.1 15.1 20.5
6 10.6 12.6 16.8 22.5
7 12.0 14.1 18.5 24.3
8 13.4 15.5 20.1 26.1
9 14.7 16.9 21.7 27.9
10 16.0 18.3 23.2 29.6
11 17.3 19.7 24.7 31.3
12 18.5 21.0 26.2 32.9
13 19.8 22.4 27.7 34.5
14 21.1 23.7 29.1 36.1
15 22.3 25.0 30.6 37.7
16 23.5 26.3 32.0 39.3
17 24.8 27.6 33.4 40.8
18 26.0 28.9 34.8 42.3
19 27.2 30.1 36.2 43.8
20 28.4 31.4 37.6 45.3
21 29.6 32.7 38.9 46.8
22 30.8 33.9 40.3 48.3
23 32.0 35.2 41.6 49.7
24 33.2 36.4 43.0 51.2
25 34.4 37.7 44.3 52.6
26 35.6 38.9 45.6 54.1
27 36.7 40.1 47.0 55.5
28 37.9 41.3 48.3 56.9
29 39.1 42.6 49.6 58.3
30 40.3 43.8 50.9 59.7
a The values of � 2 distribution are computed using
www.fourmilab.ch/rpkp/experiments/analysis/chiCalc.html.
Research methods in toxicology and insecticide resistance monitoring of rice planthoppers 101