Senior Data Analyst Interview Questions

2,903 senior data analyst interview questions shared by candidates

Phone interview: Technical terms from the resume such as what is PCA, A/B testing, difference between A/B and multivariate Onsite: go through resume some basic sql join question some basic R syntax asked if each of the models mentioned in resume were supervised/unsupervised how would you go about to figure out potential customers, what all data points? why discover (all asked) decision trees, regression ques a ton of behavioral questions
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Senior Data Analyst

Interviewed at Discover

4
Feb 27, 2020

Phone interview: Technical terms from the resume such as what is PCA, A/B testing, difference between A/B and multivariate Onsite: go through resume some basic sql join question some basic R syntax asked if each of the models mentioned in resume were supervised/unsupervised how would you go about to figure out potential customers, what all data points? why discover (all asked) decision trees, regression ques a ton of behavioral questions

Initial Codesignal assessment: 14 MCQs and 1 SQL query question. Mini-case interview: A rideshare company wants to expand into a new canadian city XYZ, how would you assess the feasibility? Then I was given some data to assess if the company is profitable? Do the numbers make sense? You realized that insurance is higher than anticipated, what is the contribution margin now? What is your final conclusion? Technical Fit: They give you a schema (1 - 3 tables) and ask you to write queries for: 1) • Tell us• how much • Cash• payments• (total•$) •we • receive each day? 2) • Identify all customers who have more payments • ($) • in cash • than they have electronically? 3) • Identify all customers who have made • over $10,000• in cash • payments during any two day period.
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Senior Associate Data Analyst

Interviewed at Capital One

Sep 25, 2025

Initial Codesignal assessment: 14 MCQs and 1 SQL query question. Mini-case interview: A rideshare company wants to expand into a new canadian city XYZ, how would you assess the feasibility? Then I was given some data to assess if the company is profitable? Do the numbers make sense? You realized that insurance is higher than anticipated, what is the contribution margin now? What is your final conclusion? Technical Fit: They give you a schema (1 - 3 tables) and ask you to write queries for: 1) • Tell us• how much • Cash• payments• (total•$) •we • receive each day? 2) • Identify all customers who have more payments • ($) • in cash • than they have electronically? 3) • Identify all customers who have made • over $10,000• in cash • payments during any two day period.

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