NTT DATA Data Scientist Interview Questions

Explain the bias-variance tradeoff and how it guides model choice, regularization, and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationNTT DATA

Pick the right metrics to evaluate a regression model and explain what each one tells you.

CalibrationMAERMSENTT DATA

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisNTT DATA

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchNTT DATA

Tests your ability to quantify value, costs, and risk to justify ML deployment decisions.

roibusiness valueMVPNTT DATA

Tests your troubleshooting process for data, pipeline, and model issues that emerge at production scale.

Feature DriftModel ServingNTT DATA