Viasat Data Scientist Interview Questions
The questions to prepare for a Viasat Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use training, validation, and cross-validation behavior to distinguish underfitting from overfitting in supervised models.
ViasatCompare Random Forest and Gradient Boosting, then choose the right ensemble for a supervised learning task.
ViasatReason about sample size, power, and minimum detectable effect before launching an experiment.
ViasatTests statistical testing choices and correct interpretation for decision-making.
ViasatTests root-cause analysis using data, instrumentation, and experiment/segment reasoning.
ViasatExplain how to evaluate a classifier on imbalanced data, with focus on metrics that are more informative than accuracy.
ViasatDesign an experiment that accounts for novelty effects and network spillovers before deciding whether to ship.
ViasatTests SQL performance tuning and understanding of query plans on large datasets.
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Use joins, CTEs, and aggregations to find the weakest step in an onboarding funnel and estimate lost conversions.
Atlassian
RevolutUse GROUP BY and HAVING to exclude students missing marks in two or more subjects.
PayPalIdentify likely duplicate ScienceDirect sessions using a self-join and conditional aggregation.
Elsevier