Hey all, hope you're doing well! This might be a dumb question, but where do the statistics on this website come from? Are the number of interviews and acceptances taken from the MSAR?

Also does the number of acceptances include people that got off the waitlist? For example, if a school has a 50% post-interview acceptance rate on Admit, does that mean that half of the applicants are directly admitted after the interview? Or does that mean like 25% were accepted directly and then 25% were waitlisted and then accepted later on. Thanks in advance!