Data Cleaning Exercises

Dataset pack

Weekly extract dates

Rows from three weekly extracts, to be profiled before they are combined.

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 Check the period each extract covers.

rows 18 rows × 3 columns

Download rows.csv (Pro)

Data dictionary

id
Unique row ID.
extract
Extract name.
day
Date of the row 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.