The interview process consisted of 3 stages: a phone interview, in-office quantitative assessment, and a day of multiple in-person interviews. The phone interview was just a brief interview with the purpose of getting a feel for the candidate. The assessment was the same one described by others here, it consisted of a bunch of basic statistics questions and two case studies at the end. It was reasonable and I completed every question while using up my whole time allotment. The interview day consisted of 5 consecutive 45-minute interviews with team members and leaders. There were some tough questions and it was a really long process, but the team was friendly and informative.