Correlation Study of Physicochemical, Rheological, and Tribological Parameters of Engine Oils

Table 10

Inference in linear regression.

	Coefficient	Standard error	-test	value
Intercept	0.085467	0.2280	0.3748	0.7189
Density @ 15°C ()	0.033305	0.2740	0.1215	0.9067
Kinematic viscosity @ 40°C ()	0.000241	0.0001	1.7749	0.1192
TAN		0.0064		0.01189