Level of Agreement (x)

Proportion

f

xf

$\left(x-\overline{x}\right)$

${\left(x-\overline{x}\right)}^2$

${\left(x-\overline{x}\right)}^{2}f$

Very Great Extent 5

69.2%

55

272

1.05

1.1025

60.6375

Great Extent 4

20.0%

21

84

0.05

0.0025

0.0525

Moderate Extent 3

4.2%

32

96

−0.95

0.9025

28.88

Low Extent 2

2.5%

10

20

−1.95

3.8025

38.025

Very Low Extent 1

4.2%

2

2

−2.95

8.7025

17.405

Total

100%

120

474

14.5125

145