Data analyst interview questions (2026)

Data analyst interviews test four areas: SQL/technical, metrics & product sense, an analytical case, and communication (can you make a stakeholder act on your finding?). Here are the questions that actually recur — then practice them in a free AI mock interview for your exact role.

SQL & technical

• Write a query to find the second-highest value per group.
• How would you find and handle duplicate or missing records?
• Explain the difference between a JOIN and a UNION with an example.

Metrics & case studies

• Daily active users dropped 10%. How would you investigate?
• What metrics would you track for [this product], and why those?
• How would you measure whether a new feature is working?

Communication & judgement

• Explain a complex analysis to a non-technical stakeholder.
• Tell me about a time your analysis changed a decision.
• How do you handle a request for data you think is the wrong question?