The assessment for the data science internship tests these five things - Algorithms, Data Structures, Programming, Basic Statistics and Professional Skills (behavioral and situational). After a few days they give you a score report to see how you compared to other candidates.

Took an online quiz type of interview for one round and then had a phone call with manager talking about relevant experiences. Was asked to talk about projects where I was analytical. No technical questions (ex. statistics, coding, etc.) were asked during the phone interview, but the quiz was all focused on knowing certain languages, specifically SQL.