Diagnose Declining Email Click-Through Rate
Company: eBay
Role: Data Analyst
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: HR Screen
Overview: This question evaluates a data analyst's competency in metric definition and validation, funnel-based diagnostics, segmentation analysis, distinguishing tracking or deliverability issues from real behavior changes, hypothesis formulation, and designing experiments for root-cause confirmation.
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