juniorAnomaly Detection
What is a Point Anomaly?
Updated May 5, 2026
Short answer
A single data instance that is anomalous relative to the rest of the data[cite: 1].
Deep explanation
This is the simplest form of anomaly. If a single data point is far removed from the global distribution, it is a point anomaly[cite: 1].
Real-world example
A $10,000 purchase on a credit card that usually spends $20[cite: 1].
Common mistakes
- Confusing it with contextual anomalies which require extra variables[cite: 1].
Follow-up questions
- Can point anomalies be detected by Z-score?