Process began with an on campus interview that was very technical. It was basically a case study that included going through some output from a statistical tool. Treat the interviewer like a client and just focus in on what you know well. I worried less about hitting every topic in the interview and instead explained the things I knew (which was most topics) very well, especially considering that there was only a 15 minute time limit to explain everything. I ended up getting through the first round and getting a second interview.

30 mins phone interview and almost technical questions. I was invited to tell about the project I have done before and ask some questions regarding this project. Also, my programming language level was asked. There were also some standard technical questions like p-value, overfitting, cross-validation.