Data Cleaning Exercises

Dataset pack

Expenses by department

Expense lines where some were never assigned to a department.

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 Totals that reconcile with missing keys.

expenses 18 rows × 3 columns

Download expenses.csv (Pro)

Data dictionary

id
Unique expense ID.
department
Department as typed; may be blank.
amount
Amount as text.

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.