Table 11: The % of contribution of the parameters to the impact strength along with the estimated ANOVA parameter.

Parameter “Sum of squaresDegree of freedomMean sum of squares statistics tabulated% of contribution

5.522.752.6928.47
6.4423.223.16*333.33
5.3422.672.61727.64

Error2.0421.0210.55

Total19.3289.66

Significance at 75% confidence level ( statistics > tabulated).