Ntt Data Europe & Latam Data Scientist Interview Questions
The questions to prepare for a Ntt Data Europe & Latam Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain practical ways to train and evaluate a classifier when the target classes are highly imbalanced.
Ntt Data Europe & LatamExplain how bagging and boosting differ, and identify a representative algorithm for each ensemble method.
Ntt Data Europe & LatamExplain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.
Ntt Data Europe & LatamPick the right metrics to evaluate a regression model and explain what each one tells you.
Ntt Data Europe & LatamExplain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.
Ntt Data Europe & LatamDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
Ntt Data Europe & LatamExplain how LAG and LEAD compare current rows to previous or next periods in time-series SQL analysis.
Ntt Data Europe & LatamTests your design for low-latency inference, streaming pipelines, and operational scalability.
Ntt Data Europe & LatamSign up to see every question
Create a free account to unlock this list and practice real interview questions.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITAggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.
B Lab Global
Tapad
ScaleCalculate each customer's cumulative transaction amount over time using a CTE and window function.
Banco Santander
Anz
Bank Of Tokyo-Mitsubishi UFJ