Data Cleaning Exercises

Dataset pack

Ticket statuses as typed

Support tickets whose status field was free text for years.

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 Frequency table, including missing.

tickets 18 rows × 2 columns

Download tickets.csv (Pro)

Data dictionary

id
Unique ticket ID.
status
Status as typed; case, padding and blanks vary.

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.