Ernst & Young Oman Data Scientist Interview Questions
The questions to prepare for a Ernst & Young Oman Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Calculate each active user's rolling seven-day revenue average with daily aggregation and window functions.
Ernst & Young OmanFind the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastImprove a supervised model by tuning features, validation, and hyperparameters to raise held-out performance.
Ernst & Young OmanSign up to see every question
Create a free account to unlock this list and practice real interview questions.
Describe how you would evaluate a successful marketing campaign using funnel KPIs, conversion, and ROI.
Ernst & Young OmanAssess whether interference between nearby units could bias an operations experiment and how to test for it.
Ernst & Young OmanEvaluates your end-to-end analytics execution and business impact focus.
Ernst & Young OmanDesign a streaming pipeline that keeps dashboard data fresh and accurate for operational reporting.
Ernst & Young OmanUse a two-proportion z-test and confidence interval to determine whether an observed conversion lift is real or just sampling noise.
Ernst & Young OmanApproach for improving a model's accuracy by checking data, features, validation, and threshold choices.
Ernst & Young Oman