Evaluation and Analysis of Variance of Storage Stability of Asphalt Binder Modified by Nanotitanium Dioxide

Table 4

ANOVA: single factor between the groups of different particle contents on softening point value.

Source of variation			Sum of squares	Degree of freedom	Mean square		Significance
Between groups	(Combined)		0.924	4	0.231	8.250	0.020
	Linear term	Contrast	0.761	1	0.761	27.161	0.003
		Deviation	0.163	3	0.054	1.946	0.240
Within groups			0.140	5	0.028
Total			1.064	9