Table 8: The % of contribution of the parameters to the flexural strength along with the estimated ANOVA parameter. 
 Parameter “”  Sum of squares  Degree of freedom  Mean sum of squares  statistics  tabulated  % of contribution  
  10.75  2  5.375  82.69   23.88   20.3  2  10.15  156.15^{*}  99  45.09   13.84  2  6.92  106.45^{*}   30.75 
 Error  0.13  2  0.065    0.28 
 Total  45.02  8  22.507    


Significance at 99% confidence level ( statistics > tabulated).
