Google Quantitative Analyst interview questions

I applied for it online in fall of 2017. A couple of weeks later a Google recruiter contacted me. He said to move forward I needed to first answer some essay questions, which included things like: describe an interesting project, how big was the sample size and number of variables, what challenges were there, and how did you solve it, etc. Then the recruiter set me up to talk with a member from the hiring team. The interview was conducted on a computer with video. He had a math PhD and was very nice . He first asked me some probability questions from sampling and then some coding questions, where I could choose the language. I chose R. The whole interview lasted about an hour. After about a week they told me that they would move forward with other candidates. Although I did not get an on-site interview opportunity, it didn't feel too bad since I wanted to do more machine learning but their group wasn't doing that.