Z-Score Flags: How Far from Normal Is a Transaction?
All lessons
- Z-Score Flags: How Far from Normal Is a Transaction?Free
- Robust Z-Scores with the Median & MAD Pro
- IQR Fences: Box-Plot Outliers in Server Latency Pro
- Rolling Mean ± k·σ Bands for a Live Metric (with a Chart) Pro
- Seasonal Baselines: Same Hour, Last Weeks Pro
- Multivariate Outliers: Standardised Distance (Mahalanobis-Lite) Pro
- Labelled Anomalies: Precision & Recall at Each Threshold (with a Chart) Pro
- Alert Fatigue & Cost: Choosing the Threshold Pro
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