Optimizing Z-score

Learn how to optimize the Z-score in a way that anomaly detection becomes easier.

So far, we used one standard deviation from the mean or a z-score of ±1 to identify anomalies. Changing the z-score threshold can affect our results. For example, let’s see what anomalies we identify when the z-score is greater than 0.5 and when it is greater than 3:

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