The clean dataset
Excel · .xlsxA full year of sales, 320 transactions, as an Excel table named Sales. Total revenue reconciles to 1,486,717.56. For Chapters 6, 8, 9, 10 and 11.
The messy edition
Excel · .xlsxThe same year as it really arrives: trailing spaces, European text numbers, mixed dates, a block pasted twice. Clean it and prove your work (Chapter 7).
Checkpoints & reference tables
Excel · .xlsxThe reconciliation checkpoints, revenue by region, and per-product price bands for anomaly detection.
All prompts, as text
Text · .txtThe twelve institutional prompts in one plain-text file.
Reconciliation checkpoints
Every figure below is computed directly from the clean dataset.
| Checkpoint | Value |
|---|---|
| Total revenue, all rows | 1,486,717.56 |
| North revenue on the Online channel | 136,767.11 |
| Revenue by region · North | 307,047 |
| Revenue by region · South | 410,292 |
| Revenue by region · East | 411,678 |
| Revenue by region · West | 357,700 |
| Gross margin | 44% |