The Anomaly Detector

A hard Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

hard

Seniority

staff

Problem

The alerting pipeline needs to flag metric readings that deviate sharply from recent history, without hard-coding thresholds for every service. Write a function that scans a time series and reports any value that strays too far from the rolling average of the preceding data points.

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