TEKsystems Data Scientist Interview Questions
The questions to prepare for a TEKsystems Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Rank TEKsystems users by monthly activity using date grouping, aggregation, joins, and ROW_NUMBER().
TEKsystemsReturn the top 3 open TEKsystems requisitions by priority using WHERE, ORDER BY, and LIMIT.
AppsFlyerTEKsystemsFind the second highest distinct employee salary from a single table, returning NULL if it does not exist.
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C3 AIExplain the underlying rule in a numerical series by identifying the pattern that generates it.
TEKsystemsDesign lag, rolling, and calendar features for a forecasting problem with temporal dependence.
TEKsystemsOutline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
TEKsystemsScan an array once to return the second-largest distinct value, handling duplicates and invalid cases efficiently.
TEKsystemsIdentify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
TEKsystemsExplain how to evaluate a classifier on imbalanced data, with focus on metrics that are more informative than accuracy.
TEKsystemsAssesses your product sense and ability to build a defensible estimation approach.
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