Anomaly Detection
Flag unusual days with weekday-aware, outlier-resistant statistics.
Property → Advanced analysis → Anomaly DetectionRun analysis1 min read
The tool uses a robust measure (based on the median absolute deviation) and compares each day against its own weekday, so a normal weekend dip is not mistaken for a problem. A day must be both statistically extreme and at least a 10% deviation to count. Needs at least 21 days.
What you get
- Metric choice (clicks, impressions, CTR, position) and a sensitivity slider (1.0–4.0, default 2.5).
- Summary cards and a confidence-band chart with severity-coloured anomaly dots.
- A sortable anomaly table (deviation %, z-score, severity) and a collapsible EWMA control chart for small persistent shifts, plus export.
Part of Advanced analysis. Related: Time-Series Decomposition, Change Point Detection.