Data Cleaning Exercises

Dataset pack

Product tags pasted from the web

Product colour tags copied from a supplier website, carrying invisible Unicode spaces.

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 Invisible spaces break validation.

tags 13 rows × 3 columns

Download tags.csv (Pro)

Data dictionary

id
Unique tag ID.
product
Product name.
colour
Colour code as pasted; may contain no-break or ideographic spaces.

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.