About 3k is average iirc.
I'm on 3,2k because I tend to die a lot, even on hard carry it's pretty common that I die as much as I kill still. Also I don't play much ranked.
So yeah stuff tends to fall out of my control easily still. :/
I want to improve, wat do? I find not dying hard often, if I want to stay and get XP/gold for an example, or when everything is contested.
Edit: It feels as if, sometimes the game is handed to me on a silver plate even if I fuck up horribly like this last lifestealer game I had, died to Roshan & did so much stupid shit but still won. But on the other hand I often feel like a game is an automatic loss, like a waste of a good 30-40 minutes of my lifetime, impossible to turn around so I get bored even if we got a chance, it ain't gonna happen.