Detector settings

Rolling window size: 14 Sensitivity (std-dev threshold): 3.0σ

The detector computes a rolling mean and standard deviation over the recent window and flags any point more than the threshold number of standard deviations away as anomalous. A lower threshold catches more real anomalies but also more false alarms from ordinary seasonal noise.

Detection quality

True anomalies caught—

False alarms—

Missed anomalies—

Time series (red = flagged, gold ring = true injected anomaly)