Clean the survey table — Data Analyst · Pretender
The fictional Vale Novo School asked students how they get to school. Before anyone makes a chart, you check the table for mistakes. Find the rows that would make the results wrong.
Spot the issues · ~4 min
Your role
You're the data analyst (in this game).
Your goal
Find the rows that would make the results wrong.
What you know
- There are 4 problems in this table.
Limits
- Each student should answer only once.
Success looks like
- No duplicates — You caught the student counted twice.
- Values that make sense — You spotted impossible values.
- Consistent labels — You noticed the same answer written in different ways.
Skills you used
- Vigilance — Noticing warning signs early.
- Logical thinking — Following steps and rules precisely.
In real life
Data analysts often spend more time cleaning data than drawing charts. They never just delete odd values: they check them, write down what they changed, and why.
Data Analyst
Turn numbers into honest answers.
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