| add_missing_indicators | Add Missing Indicators |
| adjust_intercept | Adjust Intercept After Back-Transformation |
| back_transform_coefficients | Back-transform Coefficients to Original Scale |
| back_transform_data | Back-transform Data |
| bootstrap_cpa | Bootstrap Confidence Intervals for the CPA Yield Gap Decomposition |
| calculate_minmax_effects | Calculate Min-Max Effects of Variables on Yield |
| calculate_opt_values | Calculate Optimal Values for Selected Variables |
| calculate_relative_importance | Calculate Relative Importance of Variables |
| check_assumptions | Check Linear Regression Assumptions |
| check_data_ready | Quick Check for Data Readiness |
| detect_variable_types | Detect variable types |
| encode_variables | Encode variables for statistical models |
| filter_variables | Apply All Filtering Steps |
| group_high_cardinality | Group levels of high-cardinality categorical variables |
| handle_missing_values | Handle Missing Values |
| missing_summary | Quick Missing Value Summary |
| model_diagnostics | Quick Model Summary with Assumption Checks |
| pareto_analysis | Pareto Analysis of Yield Gap Contributions |
| plot_all_graphs | Generate All Yield Gap Plots |
| plot_contribution_shares | Plot Variable Contributions to Yield Gap |
| plot_minmax_effects | Plot Min-Max Effects of Variables on Yield |
| plot_observed_vs_predicted | Plot Observed vs. Predicted Yield |
| plot_relative_importance | Plot Relative Importance of Variables |
| plot_yield_gap_distribution | Plot Distribution of Yield Gap Across Fields |
| preprocessing_report | Create a Preprocessing Report |
| prep_yield_gap | Main Preprocessing Pipeline for Yield Gap Analysis |
| remove_constant_vars | Remove Constant Variables |
| remove_highly_correlated | Remove Highly Correlated Variables |
| remove_near_zero_variance | Remove Near Zero Variance Variables |
| remove_non_predictors | Remove Non-Predictor Variables |
| save_field_level_excel | Save Field-Level Yield Gap Analysis to Excel |
| save_results_excel | Save Yield Gap Analysis Results to Excel |
| scale_new_data | Scale New Data Using Existing Parameters |
| scale_variables | Scale Continuous Variables |
| select_vars_aic | Variable Selection via AIC-Based Stepwise Regression |
| select_vars_ftest | Forward Stepwise Variable Selection Using F-test |
| sugarcane1 | Sugarcane Yield Trial Data |
| summary_scaling | Get Scaling Summary |
| trim_whitespace | Trim leading/trailing whitespace from character columns |
| validate_model_with_cv | k-Fold Cross-Validation for Yield Gap Model |
| validate_preprocessing | Validate Preprocessing Results |
| wheat1 | Wheat Yield Trial Data (Clean) |
| wheat2 | Wheat Yield Trial Data (Small, High-Dimensional, Real-World Messy) |
| yield_gap_analysis | Complete Yield Gap Analysis Using CPA Method |
| yield_gap_components | Calculate Yield Gap Components from CPA Table |