Data Cleaning Exercises

Dataset pack

Survey response rates

Survey answers in wide form with many unanswered questions.

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 Unanswered questions count in the denominator.

survey 13 rows × 4 columns

Download survey.csv (Pro)

Data dictionary

respondent
Unique respondent ID.
q1
Answer to question 1.
q2
Answer to question 2.
q3
Answer to question 3.

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.