Table 8 Variance data.

From: Experimental study of energy attenuation of protruding shock waves in mines under elastic device buffering

Statistic

Calculation result

Mean of group A

57.96

Mean of group B

59.91

Sum of squares of deviations within Group A

3040.82

Sum of squares of deviations within Group B

2530.98

Sum of squares of deviations within Groups

5571.8

Sum of squares of deviations between Groups

34.22

Degrees of freedom within groups

16

Degrees of freedom between groups

1

Mean square within groups

348.24

Mean square between group

34.22

Back to article page