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Updated weekly · Last refresh Aug 30

SGS Consulting AI/ML Analyst Interview Questions

The questions to prepare for a SGS Consulting AI/ML Analyst interview. Questions from real interview reports rank first. Updated weekly.

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1
Model EvaluationStart here. 10 questions · ~86 min
Choose RMSE vs MAEEasy

Compare two rent prediction models and decide whether MAE or RMSE is the better selection metric given costly large errors.

RegressionMAERMSESGS Consulting
Evaluate Regression with RMSE and MAEEasy

Explain how to evaluate a regression model with RMSE and MAE, and how to interpret the tradeoff between average and large errors.

RegressionMAERMSESGS Consulting
Precision vs Recall TradeoffEasy

Explain the difference between precision and recall, and how each reflects a different type of classification error.

Evaluation TechniquesClassificationConfusion MatrixSGS Consulting
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2
Machine Learning6 questions · ~52 min
Bias-Variance Tradeoff in PracticeMedium

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

Cross-ValidationBias-Variance TradeoffRegularizationSGS Consulting
Handling Class Imbalance in ClassificationMedium

Explain practical ways to train and evaluate a classifier when the target classes are highly imbalanced.

model trainingSupervised LearningClass ImbalanceSGS Consulting
Tune Model HyperparametersMedium

Choose hyperparameters for a supervised model using cross-validation and regularization tradeoffs.

Hyperparameter TuningCross-ValidationRegularizationSGS Consulting
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3
Statistics & Probability3 questions · ~26 min
Statistical Significance in Hypothesis TestingEasy

Explain what statistical significance means and why it matters when interpreting experimental or analytical results.

Hypothesis TestingData AnalysisStatistical SignificanceSGS Consulting
A/B Testing Experience and ImplementationEasy

Explain how you have designed and implemented A/B tests, including hypothesis setup, analysis, and decision making.

ExperimentationStatistical SignificanceA/B TestingSGS Consulting
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The finish line: interview-readyComplete all 19 questions to finish this plan.