Parametric and Nonparametric Approaches of Reid Vapor Pressure Prediction for Gasoline Containing Oxygenates: A Comparative Analysis Using Partial Least Squares, Nonlinear, and LOWESS Regression Modelling Strategies with Physical Properties

Table 2

Correlation matrix for RVP and physical properties of GOB samples.

Variable	S-Dens	IBP	T10	T50	T90	FBP	RVP
S-Dens	1.000	-0.362	0.527	0.571	-0.096	0.458	-0.651
IBP	-0.362	1.000	-0.860	-0.921	0.718	-0.835	0.336
T10	0.527	-0.860	1.000	0.948	-0.775	0.755	-0.462
T50	0.571	-0.921	0.948	1.000	-0.688	0.855	-0.462
T90	-0.096	0.718	-0.775	-0.688	1.000	-0.448	0.157
FBP	0.458	-0.835	0.755	0.855	-0.448	1.000	-0.409
RVP	-0.651	0.336	-0.462	-0.462	0.157	-0.409	1.000