Dataset pack

Monthly refunds

Refunds around March 2026; in some datasets March has no refunds at all.

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 A total of nothing is zero.

refunds 12 rows × 3 columns

Download refunds.csv (Pro)

Data dictionary

id: Unique refund ID.
day: Refund date, YYYY-MM-DD.
amount: Refund 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.