What would the critical chi-square value be if my test involves seven classes? T
ID: 319695 • Letter: W
Question
What would the critical chi-square value be if my test involves seven classes? Table 1. Critical chi-square values for a p-value of 0.05. Reject the null hypothesis if 2calc > 2crit.
df
2crit
1
3.84
2
5.99
3
7.81
4
9.49
5
11.07
6
12.59
7
14.07
8
15.51
9
16.92
10
18.31
11
19.68
12
21.03
13
22.36
14
23.68
15
25.00
16
26.30
17
27.59
18
28.87
19
30.14
20
31.41
df
2crit
1
3.84
2
5.99
3
7.81
4
9.49
5
11.07
6
12.59
7
14.07
8
15.51
9
16.92
10
18.31
11
19.68
12
21.03
13
22.36
14
23.68
15
25.00
16
26.30
17
27.59
18
28.87
19
30.14
20
31.41
Explanation / Answer
A statistical test that can test out ratios is the Chi-square or goodness of fit test
Degrees of freedom= n-1 where n is the number of the classes
The value for the test having seven classes will have 6 degrees of freedom.
The value of 6 df is 12.59.
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