Capital One Sr. Data Analyst interview questions

Biggest accomplishment. Time when you made a mistake. Time when you went out of your way to help someone.

On power day, 2 case study rounds where the interviewer will provide case details and ask series of questions about the problem and data (give accurate answers and reasoning for your answer). In Data challenge round you have to explain the process and idea behind how you solved the challenge, then you will have series of questions based on your approach and explanation (e.g. why PCA ?, difference in weights obtained in manual and PCA?). Last is behavioral round.