# Data Profile

## Source and scope

- Source:
- Extraction date:
- Population represented:
- Observation period:
- Update frequency:

## Data dictionary

| Field | Meaning | Unit | Type | Available at decision time? | Quality note |
| --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |

## Quality checks

- Rows:
- Columns:
- Duplicate records:
- Missing values:
- Unexpected ranges or outliers:
- Target distribution:
- Segment coverage:

## Leakage review

- Fields created after the decision:
- Fields derived from the target:
- Sample selection problems:
- Other limitations:

## Done when

- Every model input has a documented meaning and timing.
- Missingness and target balance have been measured.
- At least one potential source of leakage has been checked.