Zima Corp Interview Questions
The questions to prepare for Zima Corp interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Calculate three-day rolling user activity averages and classify behavior trends with SQL window functions.
Use joins, CTEs, and aggregations to classify power vs casual users and compare their engagement metrics.
Join two tables and derive palindrome, reversed-substring, and character-frequency results with PostgreSQL.
HsbcDesign an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.
Assess why checking experiment results early can inflate false positives and distort ship decisions.
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Identify the causes of a quarterly engagement decline through metric validation, decomposition, segmentation, and trend analysis.
Approach for choosing launch success metrics, including a north star, leading indicators, and clear success criteria.
Explain statistical significance, p-values, practical importance, and uncertainty to a non-technical stakeholder.
Build a systematic process to validate, decompose, and explain a sudden 10% drop in core engagement.