NTT DATA Data Scientist Interview Questions
The questions to prepare for a NTT DATA Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Compare Random Forest and Gradient Boosting, then choose the right ensemble for a supervised learning task.
NTT DATAUse joins, monthly aggregation, and window functions to compute running revenue totals and customer rank by region.
NTT DATAPick the right metrics to evaluate a regression model and explain what each one tells you.
NTT DATAExplain statistical significance in experiments and how p-values and confidence intervals guide interpretation.
NTT DATADesign a marketing campaign experiment with a pre-registered metric plan, power calculation, and ship rule that respects guardrails.
NTT DATADiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
NTT DATATests your troubleshooting process for data, pipeline, and model issues that emerge at production scale.
NTT DATATests your ability to connect predictive modeling to operational outcomes and product delivery goals.
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Find the second highest salary in each department without using aggregate functions.
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Cisco Restaurant + BarExplain how TRUNCATE and DELETE differ in row removal, transaction behavior, and identity handling.