iOPEX Technologies Data Scientist Interview Questions
The questions to prepare for a iOPEX Technologies Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Compute each user's seven-day activity average and compare it with the corresponding rolling average from the prior week.
Calculate monthly cohort retention using date-based cohorts, aggregation, and window functions.
AAA Life InsuranceCalculate 7-day rolling claim costs and identify dates where the cost trend is accelerating.
CLARA analyticsExplain how to establish statistical significance in A/B tests using hypotheses, power, confidence intervals, and safeguards against false positives.
Sign up to see every question
Create a free account to unlock this list and practice real interview questions.
Explain the Transformer architecture, its core components, and why it became the standard for sequence modeling.
Diagnose a sudden 20% KPI decline by validating measurement, decomposing drivers, and separating real behavior changes from data issues.
Determine the sample size needed to detect a meaningful A/B test effect at a chosen significance level and power.
Identify major online experimentation pitfalls and explain practical mitigations for SRM, network effects, peeking, and novelty.
Define a meaningful engagement metric for a retail analytics mobile application and explain how to validate it.
Tests communication, ownership, and stakeholder management when translating technical complexity into actionable business understanding.