Data Cleaning Exercises

Dataset pack

Blog post tags

Tags on blog posts, typed on phones and pasted from web pages.

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 Count tags that look alike.

tags 15 rows × 3 columns

Download tags.csv (Pro)

Data dictionary

id
Unique tag row ID.
post_id
Post the tag is on.
tag
Tag text as entered.

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.