Data Cleaning Exercises

Dataset pack

Support tickets with free-typed priorities

Tickets where agents typed priority in several ways, or left it empty.

Fictional data · UTF-8 CSV, every value quoted so padding and leading zeros survive; empty fields are missing values · free for personal and classroom practice · practise it in Map ticket priorities with a documented default.

tickets 12 rows × 3 columns

Download tickets.csv (Pro)

Data dictionary

id
Unique ticket ID.
subject
Short subject line.
priority
Priority as typed; may be empty or missing.

Values are shown in quotes so leading and trailing spaces are visible. ∅ means the cell is missing. Exercises are also graded on hidden datasets that are never published.