Didn't know exactly where to put this, so here goes.
Is there a variance calculator for sports betting? (I know there are some for poker for instance)
I want to calculate how big the chance is to end up in + and - after a series of bets.
So for instance: Expected ROI of 5%, average odds 3.00, 500 bets.
Or is the type of sports you bet on too big of a variable (variance-wise) to calculate this?