norm_decimal            Decimal Scaling Normalization
norm_l2                 L2 Normalization (Unit Vector)
norm_mean               Mean Normalization
norm_minmax             Min-Max Normalization
norm_mode_range         M-Score (Mode-Range Normalization)
norm_robust             Robust Standardization (Median-MAD)
norm_zscore             Z-Score Standardization
pp_plot                 Visualize Distribution: Before vs After
sim_gait_data           Simulated Geriatric Gait Data
trans_boxcox            Box-Cox Transformation
trans_log               Logarithmic Transformation
trans_yeojohnson        Yeo-Johnson Transformation
