Files for practice and reproduction

• Raw shipment export, clean shipments, simulated checklist trial
• Data provenance notes, full dictionary
• Learner calculation starter, public learner checker
• Reference numerical results, chart values, sampling demonstration results
• Exact computational dependencies, editorial build dependency
• Reference test record, reproducibility record, static package check record

The reference files contain answers. Keep your own work separate and attempt the exercises first. Source Markdown and tools are included in the extracted folder for editing; the three HTML pages are the convenient reading edition.