Data Cleaning Summary — Jun 10
| Issue | Rows affected | Action |
|---|---|---|
| 🔴 Duplicate rows | 142 | Removed |
| 🟡 Inconsistent dates | 89 | Standardized to YYYY-MM-DD |
| 🟡 Mixed text casing | 61 | Normalized to title case |
| 🟡 Leading/trailing spaces | 26 | Trimmed |
| 🔴 Missing required fields | 27 | Flagged for review |
Summary: 4,812 rows processed. 318 cleaned automatically and moved to the 'Clean' tab. 142 duplicates removed. 27 rows are missing a required field (mostly customer ID) and were left in a 'Needs Review' tab rather than guessed at. Full change history is in the 'Cleaning Log' tab. The dataset is ready for analysis once the 27 flagged rows are resolved.
