Data Cleaning Exercises

Dataset pack

Daily orders and a marketing calendar

Daily order counts for November and the marketing calendar of known events.

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 Spikes with calendar context.

daily 16 rows × 3 columns

Download daily.csv (Pro)

Data dictionary

id
Unique row ID.
day
Date, YYYY-MM-DD.
orders
Orders that day as text.

events 3 rows × 2 columns

Download events.csv (Pro)

Data dictionary

day
Event date (unique).
event
Event name.

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.