calc_cate_nelson_empirical
                        Empirical Cate Nelson Threshold Calculation via
                        ANOVA Grid Search
cut_off_table           Fit Cubic Models, Determine Yield Cutoff, and
                        Extract CND High-Yield Norms
diagnose_specimen       Diagnose Plant Tissue Specimens using CND Norms
iteration_for_hyp       Iterative Partitioning and Variance Ratio
                        Calculation for CND
log_centered_table      Generate Log-Centered Ratio Table for CND
plant_leaf_data         Example Crop Dataset for CND
plot_cate_nelson        Cate Nelson Quadrant Scatter Plot for CND
                        Imbalance Index vs. Yield
plot_cnd_chisq          Plot Cumulative Chi-Square Distribution Curve
                        and Mark Theoretical Critical CND r^2
plot_cnd_yield_linear   Linear Regression Plot for Crop Yield vs. CND
                        Imbalance Index (r^2)
plot_cnd_yield_nlr      Non-Linear Polynomial Regression Plot for Crop
                        Yield vs. CND Imbalance Index
plot_cumulative_variance
                        Connected Scatter Plot for Cumulative Variance
                        Ratio Function Fi(Vx) vs. Yield
simplex_table           Generate Simplex Table for Compositional
                        Nutrient Diagnosis (CND)
validation_data         Example Crop Dataset for CND norms validation
