Table 6: Analysis of variance of yield using protease.

ANOVA Sum of squares Degrees of freedom Mean square Fcal Ftab P
Regression* 856.1 5 171.2 11.8 3.2 0.0207
Residue 159.5 11 14.5 - - -
Lack-of-fit 156.7 9 17.4 12.5 19.4 0.0729
Pure error 2.8 2 1.4 - - -
Total 1015.6 16 - - - -

*Significant effects at 5% significance. R2 = 84.30%.