🧪 04 — Case Study Practice

Case: Customer Churn

Prompt:

A subscription company wants to reduce churn. What would you do?

Strong answer structure:

1. Clarify business goal.
2. Define churn.
3. Identify data sources.
4. Perform EDA.
5. Build baseline.
6. Choose metric.
7. Train model.
8. Interpret drivers.
9. Recommend action.
10. Monitor after deployment.

Questions to Ask

• What counts as churn?
• What is the intervention cost?
• Are false positives or false negatives worse?
• How will predictions be used?
• What data is available before churn?

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