| audit_transformation | Audit geographic transformation |
| check_census_key | Check for Census API key |
| create_audit_report | Create complete audit report |
| extract_perturbed_population | Extract perturbation by receiving county |
| get_zcta_baseline | Get ACS baseline data for ZCTAs |
| pad_geoid | Pad GEOID to 5 digits |
| plot_baseline_zctas | Plot baseline ZCTAs |
| plot_geometric_vs_relationship | Plot geometric vs relationship membership |
| plot_transformation_perturbation | Plot transformation perturbation |
| prep_hud_crosswalk | Prepare HUD ZIP-County crosswalk data |
| prep_zip_zcta | Prepare ZIP-ZCTA crosswalk data |
| print.shellgame_audit | Print method for shellgame_audit |
| run_full_transformation | Run full transformation pipeline |
| summary.shellgame_audit | Summary method for shellgame_audit |
| transform_zcta_to_zip | Transform ZCTA data to ZIP level |
| transform_zip_to_county | Transform ZIP data to County level |