Conditionally apply a simple function to a column in a dataframe, then extend that function to work with multiple conditions.
Sr Data Scientist Interview Questions
3,427 sr data scientist interview questions shared by candidates
Tell me about a time you delivered impact
Causal inference case study, experimentation, behavioral questions on conflict resolution
Q: Python, SQL, product sense, stats
What was a project that didn’t go well
Do you do A/B testing in your current role, and if so, who do you do it with?
SQL: Group By, JOINS and slightly WINDOW functions Python: Write k-means algorithm from scratch Case Study: Design an ML system that uses sparse text data(e.g bag of words etc.)
How to maintain data integrity if working with external data sources
Codility assessment tests you on some popular Python libraries and SQL.
Codility assignment with two SQL queries and one Python challenge where you had to implement a mathematical formula solely using Numpy. Personality and Deductive reasoning assessment. The technical phone screen was related to past work. Technical case study onsite.
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