Practice interviews

1. Did activation fall or did the denominator change?Challenge the denominator before the result
2. Why does the SQL query report £800 instead of £300?A valid query can answer the wrong question
3. Conversion fell. What changed?A falling total can hide improving channels
4. Does the AI summary describe the support backlog?The summary is not the investigation
5. Should a discount with more orders scale?Observed volume is not incremental value