Table 8: Statistical approach to select the RSM model with gas price of $4/MSCF.

SourceStd. Dev. -SquaredAdjusted -SquaredPredicted -SquaredPress

Linear0.250.89500.87470.83143.16
2FI0.240.94970.88370.293613.26
Quadratic0.0650.99780.99170.88512.16Suggested
Cubic011Aliased