International Journal of Chemical Engineering / 2010 / Article / Tab 3

Research Article

Process Optimization for Biodiesel Production from Corn Oil and Its Oxidative Stability

Table 3

22 factorial design: statistical analysis.

Response: (%)

Number of experiments:4
Degree of freedom:3
Results of statistical analysis
(average)97.16

Main effects and interactions
,   ,   

Statistical Significance of -test
Confidence level: 95%,Standard deviation,
Student’s value, ,Confidence interval: 0.38
Significant effects and Interactions:

Statistical significance of curvature
Curvature:
Confidence curvature interval: 0.54
Curvature: significant

Response equation: