Dissect a failure and corrective actions

Walk me through a recent failure. Cover: a) the underlying causes (your own choices versus outside forces) using a 5 Whys chain or a fault tree; b) the early warning signals you overlooked; c) who was affected and the precise quantitative or financial cost; d) the postmortem you produced (its structure, owners, timelines); e) the exact process or control you introduced to stop it from recurring and how you confirmed that it works.

Overview: This question assesses a candidate's ability in root-cause failure analysis, owning mistakes, quantifying stakeholder impact, writing postmortems, and designing plus verifying corrective controls relevant to a Data Scientist role.

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