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Interviewers ask this kind of question to surface how you think, not what you remember. The strongest answers are specific, calmly told, and end on what changed.

Metric diagnosis · Ruling out instrumentation issues

Two months after your claims-system migration, the reported loss ratio for the migrated lines spiked. How do you determine whether the book deteriorated or the data did?

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Migration timing coinciding with the spike is the loudest clue, so I'd audit the data path before believing the deterioration.…

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