momentum between matches or between rounds?
ive thought about this before, id probably get some data from rib or vlr about the likelihood of a team winning a round, given they won the previous one. e.g. the chance of winning round two after winning pistol is much higher than winning round three after winning your anti-eco
of course round wins are mostly determined by the teams economy going into it so you may have to account for this
something else you could do is an investigation into the chances a team wins a map/ comes out positively in a half after winning one or both pistols
not sure what the IB course consists of but could do some sort of statistical test for significance if thats something youve studied
just a couple ideas, good luck, sounds like a fun project