Data Cleaning Exercises

Dataset pack

Regional files with a renamed column

Three regional exports; the oldest one still uses the old amount column name.

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 Rename a column before stacking files.

north 8 rows × 2 columns

Download north.csv (Pro)

Data dictionary

id
Unique row ID.
amt
Amount (old column name).

south 4 rows × 2 columns

Download south.csv (Pro)

Data dictionary

id
Unique row ID.
amount
Amount as text.

west 5 rows × 2 columns

Download west.csv (Pro)

Data dictionary

id
Unique row ID.
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.