Google Quantitative Analyst interview questions

I contacted the recruiter directly through LInkedIn inmail. She replied almost right away and sent a set of general questions regarding how to approach a specific problem and the type of skillsets, programming skills I had. Very quickly I was scheduled for an interview with someone from the team. I was not given the name or charge of the interviewee but I was given a quick description of what content I could expect to be included in the interview. I went through a quick review of my notes. On the day of the interview I was shocked when the interviewee went straight to the questions without much of an introduction. Also, although I have had Chinese friends with a difficult accent, I think the fact that I was a little nervous and the fact that I had troubles figuring out what she was saying, increased my level of stress. In the end I lost focus and I was able to respond (not really well) to only three stats questions, although the focus of the interview was supposed to be mainly in OR and supply chain. The questions were not that complicated but did require some thinking.

I got referred by a Googler for several positions. This Quantitative Analyst role has been the only one that contacted me for an interview. I got contacted about a week after I was referred. First thing was to respond to a questionnaire that asks questions like what tools you use for data processing and what data set size you have worked with. Then a 45-minute technical phone screen was scheduled. The recruiter sent useful information about what to expect and tips to prepare. The interviewer was nice and interacted actively. Questions went from theoretical to more open-ended. Data intuition was tested. There was no coding question. I was not advanced to the next round.