Anomaly Detection in SQL: Finding Outliers with Z-Score and IQR
Automatically detect abnormal data with SQL. Implement Z-Score, IQR, and percentile-based outlier detection.
Anomaly Detection in SQL: Finding Outliers with Z-Score and IQR
Automatically detect abnormal data with SQL. Implement Z-Score, IQR, and percentile-based outlier detection.
TL;DR
- Outlier: Data point outside the normal range
- Z-Score: Standard deviations from mean (|Z| > 3 = outlier)
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