Walmart Global Tech Data Scientist Interview Questions
The questions to prepare for a Walmart Global Tech Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Calculate each CVS store's 7-day rolling sales average using a CTE, aggregation, join, and window function.
Walmart Global TechExplain how to determine A/B test sample size using baseline rate, MDE, alpha, power, allocation, and expected traffic.
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Explain your experience with ML frameworks and how you choose between them for supervised learning problems.
Walmart Global TechAssess whether a model is effective using core classification metrics and the confusion matrix.
Walmart Global TechExplain how sample means become approximately normal and why this supports inference from samples.
Walmart Global TechDesign a production ML deployment on Google Cloud with serving, feature management, rollout, monitoring, and evaluation.
Walmart Global TechExplain how you evaluated a marketing campaign using funnel, efficiency, and business outcome metrics.
Walmart Global TechTests depth of understanding of Transformer architectures and attention-based modeling.
Walmart Global Tech