TABLE 6.

Regression analysis of the effects of garlic powder (GP) (quantitative factor) in each level of mushroom powder (MP) for Newcastle disease virus (NDV) titre.

		NDV titre
		0 MP			1 MP
Source	df	Sum of squares	R 2	p Value	Sum of squares	R 2	p Value
Model	1	1.365	0.68	<0.0001	0.232	0.33	0.0020
Lack of fit	2	0.023		0.6753	0.055		0.2427
Pure error	20	0.578			0.362
Total error	22	0.601			0.650
Equations		2.62 + 0.43 GP			2.78 + 0.18 GP
Confidence interval		(0.30, 0.55)			(0.07, 0.28)