Table 7.

Multi-factor ANOVA interpretation.

Factor	p Value	Statistical Implication	Conclusion
AOX	<0.0005	Reject null hypothesis of no difference in means.	At least one mean pH is significantly different from the rest because of the type of antioxidant that was incorporated into the film.
% AOX	0.002	Reject null hypothesis of no difference in means.	At least one mean pH is significantly different from the rest because of the content of antioxidant (% wt) in the film.
Day	<0.0005	Reject null hypothesis of no difference in means.	The mean pH measured on day 1 is significantly different from that measured on day 15.
AOX and % AOX	0.991	Do not reject null hypothesis of no interaction between the factors.	The effect of the type of antioxidant on the mean pH does not significantly depend on its content (% wt).
AOX and day	<0.0005	Reject null hypothesis of no interaction between the factors.	The effect of the type of antioxidant on the mean pH significantly depends on the day when the pH is measured.
% AOX and day	0.175	Do not reject null hypothesis of no interaction between the factors.	The effect of the content of antioxidant (% wt) on the mean pH does not significantly depend on the day when the pH is measured.
AOX, % AOX and day	<0.0005	Reject null hypothesis of no interaction among the factors.	There is a significant effect of the combination of the three factors in the mean pH values.

AOX: antioxidant; % wt: weight percentage.