Table 5: The % of contribution of the parameters to the tensile strength along with the estimated ANOVA parameter.

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

18.5729.2859.622*36.93
21.72210.8611.25*943.19
8.0624.034.17616.03

Error1.9320.9653.83

Total50.28825.14

Significance at 90% confidence level ( statistics > tabulated).