Fermentation of Musa paradisiaca Peels to Produce Citric Acid

Table 4

ANOVA of the model.

Source	DF	SS	MS (variance)	F	value
Total	11	2497.03	227.00
Constant	1	2136.44	2136.44
Total corrected	10	360.59	36.06
Regression	5	334.56	66.91	12.86	0.007
Residual	5	26.02	5.20
Lack of fit (model error)	3	20.24	6.75	2.33	0.314
Pure error (replicate error)	2	5.79	2.89

DF: degrees of freedom; SS: sum of squares; MS: mean squares; F: Fischer’s variance ratio; P: probability value. A goodness of fit test was performed by comparing the MS (mean square) lack of fit to the MS (mean square) pure error.