A Complex Evaluation and Optimization Approach for Oxygen-Enriched Combustion Characteristics of Blended Fuels Based on Response Surface Methodology

Table 2

The variance of comprehensive combustion characteristic index of different models.

Source of variance	Quadratic sum	Degree of freedom	Mean square	F-value	Probability > F	Scheme selection
Average value	1816.17	1	1816.17
Linear model	763.11	2	381.56	21.27	0.0004
2FI	100	1	100	8.12	0.0261
Quadratic equation	83.31	2	41.66	9.48	0.0183	Recommended
Cubic equation	30.17	2	5.09	23.36	0.0041	Poor
Residual deflection	3.62	5	0.72
Grand total	2796.38	13	215.11