Data science interview questions - with answers

The answers are given by the community

• If you know how to answer a question — please create a PR with the answer
• If there's already an answer, but you can improve it — please create a PR with improvement suggestion
• If you see a mistake — please create a PR with a fix

For updates, follow me on Twitter (@Al_Grigor) and on LinkedIn (agrigorev)

• Theoretical questions: theory.md (linear models, trees, neural networks and others)
• Technical questions: technical.md (SQL, Python, coding)
• More to come

• Awesome data science interview questions and other resources: awesome.md

This is a joint effort of many people. You can see the list of contributors here: contributors.md