ROI Arb function

qbawler311 · Jul 25, 2006

The function for calculating the ROI (return on investment) for an arb with 2 sides (no draw odds) is: x,y equal (decimal) odds on each team.

ROI = ((x + y) / (2 + x/y + y/x)) - 1

How does this function change if I want to find the ROI of an arb including the event of a tie (3 sides)?

wilheim · Jul 25, 2006

Qbawler311, welcome to The Rx. i hope you enjoy the site..

I wish I could help with your question but to be honest you lost me.:grandmais

Best of luck, wilheim..

goodcall · Jul 25, 2006

Not sure of the formula, but you can use this calculator until you find it:

http://www.betriskfree.co.uk/arbitrage_calculator.asp

best of luck!

Woody0 · Jul 25, 2006

qbawler311 said:
The function for calculating the ROI (return on investment) for an arb with 2 sides (no draw odds) is: x,y equal (decimal) odds on each team.

ROI = ((x + y) / (2 + x/y + y/x)) - 1

How does this function change if I want to find the ROI of an arb including the event of a tie (3 sides)?

Is it:

ROI = ((x + y + z) / (3 + x/y + y/x + x/z + z/x + y/z + z/y)) - 1

GreenDoberman · Jul 25, 2006

I think the site betbrain.com has a good explanation and calculation for three-way lines for soccer.

qbawler311 · Jul 26, 2006

Woody0 said:
Is it:

ROI = ((x + y + z) / (3 + x/y + y/x + x/z + z/x + y/z + z/y)) - 1

Thanks Woody, but the result given from this function slightly differ from the results at:
http://www.betriskfree.co.uk/arbitrage_calculator.asp

when entering the same 3 way odds into both?