After sending in my application, I received an email from them about a month later asking me to do an exercise for them. Completing this exercise did not guarantee me an interview. The purpose of the exercise was to gauge my thinking process for answering a data analytics question, like what x variables might be causing an increase in this y variable, so it wasn't difficult and you could just use Excel. For my exercise though, the instructions were very unclear, so I answered the question based on how I interpreted it, which apparently was wrong. Thankfully though, I was still asked to interview and got the chance to explain how I interpreted the question, so the interviewer understood why I did my analysis the way I did. It took another month to hear back and receive an offer from them.