THG Data Scientist Interview Questions
The questions to prepare for a THG Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Rank top product categories by revenue and units sold during a defined reporting period.
Calculate daily sales and a date-based 30-day rolling average using PostgreSQL window functions.
Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.
Rank personal shoppers by average delivery speed and customer rating using joined transactional data and a ranking calculation.
InstacartSelect statistical methods to estimate marketing lift, test significance, quantify uncertainty, and distinguish correlation from causal campaign impact.
Define a meaningful engagement metric for a retail analytics mobile application and explain how to validate it.
Determine the sample size needed to detect a meaningful A/B test effect at a chosen significance level and power.
Framework for deciding when to favor short-term conversion gains versus long-term retention in a product decision.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Sign up to see every question
Create a free account to unlock this list and practice real interview questions.