Table 2: Error functions.

Error Functions Expression Equation Number
Relative Percent Error (RPE) where, N is the number of experimental points.
(7)
Marquardt’s Percent Standard Deviation (MPSD) where, N is the number of experimental points and P is the number of parameters in the regression model.
(8)
The Hybrid Error Function (HYBRID) where, N is the number of experimental points and P is the number of parameters in the regression model.
(9)
R2 where, N is the number of experimental points.
(10)
MSE where, N is the number of experimental points.
(11)