Nielsen Research Analyst interview questions

I heard about the position from a personal referral and applied through their website, so they emailed me back to set up a phone interview the next week. That went well so they called me in for an assessment of 10 math questions and 2 case studies in 90 minutes which was challenging, but as long as you move quickly you can complete. A day or two later they emailed me back to set up an in person interview, which consisted of 3 40 minute interviews and a lunch with a senior analyst. The interviews were part behavioral part analytical: some questions easier than others. The office seemed very relaxed and dress was business casual at best, friendly people and nice location.