Empirical modeling of the drying behavior of agricultural products often requires the statistical methods of regression and
correlation analysis. Linear and nonlinear regression models are important tools to find the relationship between different variables, especially those for which no established empirical relationship exists.
A non-linear multiple regression analysis was performed using the drying mathematical models and the experimental data. The experimental data were interpreted by means of a non-linear regression and statistical analysis modeled with the DataFit 9.0.59 – program. The drying models which are expressing the best the experimental data were selected based on the mean relative error (MRE), the standard error of estimate (SEE) and coefficient of multiple determinations (R2).