Analytics

Interview question

seniorlevel
12 minsuggested time
3Data analyst, Data scientist, ML engineer

You must set up automatic alerts on 200 daily KPIs (bookings, revenue, load factor by market and channel). Last year's simple "plus or minus 10% versus yesterday" rule produced so many false alarms that people muted it. Design something better.

Tests: Anomaly detection for business metrics: seasonality-aware baselines, multiple-testing and alert fatigue, severity ranking, and feedback loops.

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