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

57.5%

69

345

1.0917

1.1918

82.2342

Great Extent 4

14.2%

17

68

0.0917

0.0089

0.1513

Moderate Extent 3

2.5%

3

9

−0.9083

0.8250

2.4750

Low Extent 2

13.3%

16

32

−1.9083

3.6416

58.2656

Very Low Extent 1

12.5%

15

15

−2.9083

8.4582

126.873

Total

100%

120

469

269.9991