class no

Observed

Expected

X²

1

12

13.97268937

0.278507826

2

27

23.29189287

0.590336672

3

34

27.36276772

1.609956012

4

41

31.6191851

2.783110566

5

48

38.78719729

2.188240956

6

58

51.31229754

0.871630513

7

64

60.5740438

0.193765764

8

72

69.97522645

0.058587991

9

78

73.85813832

0.232269843

10

86

70.5778417

3.369938227

11

94

93.05261118

0.009645571