Grade

Observed value

of test statistics ( ${\chi }_1^2$ )

Degree

of freedom

Critical value

at α = 0.05

Decision

1

147.8734

10

18,31

Reject

2

98.3836

10

18.31

Reject

3

72.7721

10

18.31

Reject

4

54.4814

10

18.31

Reject

5

64.7222

10

18.31

Reject

6

25.3742

5

11.07

Reject

TPM

463.6068

100

124.34

Reject