Hidden Elo is the word. There is a MMR for 3v3/5v5 normal/ranked. So you can have a high MMR in rankeds, lets say 2250. But you can just troll and suck hard in normal games. (both 5v5). So, even if you are in Diamond Division and suck in Normalqueue, your MMR is not affected by this.
Eh.. there is also the MMR for 3v3 Team and 5v5 Team. That's the reason why it is possible to farm MMR with a ranked team.
Cheerz, MMR-ception~
Eh.. there is also the MMR for 3v3 Team and 5v5 Team. That's the reason why it is possible to farm MMR with a ranked team.
Cheerz, MMR-ception~