I was referred by my colleague in graduate school and received a notice from HR inviting me to take online test immediately. I had personality test, verbal test and quantitative test all in a 2 hour period. Then I got scheduled a interview with a senior statistician. I heard that usually they ask something from undergraduate statistics and linear regression. I was very busy at the time, just picked up a book from library and read through it. The interview did not go very well. I don't remember exactly what I was asked, but I stumbled at general questions like can you go through how to do approach a business problem (cannot remember the exact problem) from the beginning ? I think it is something like you need to know how and where to collect data, how to find variables, how to choose variables, what estimation methods you need to use, and so on.

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.