Data Cleaning Exercises

Dataset pack

Product price history

A price list where each product has several dated price rows, some with broken prices.

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 Keep the current price per product.

prices 16 rows × 4 columns

Download prices.csv (Pro)

Data dictionary

row_id
Unique row ID.
sku
Product SKU.
price
Price as text with up to two decimals.
valid_from
ISO date from which the price applies.

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.