Replies
advantagenovice,
Sorry for the jargon! "IBA" is Initial Bet Advantage: it's your average edge based on your initial bet for the hand. "Initial" here means your bet before you split and/or double down. Often this is simply called your "edge", or "EV".
The IBA is distinct from the "TBA", or Total Bet Advantage, which is your edge based on the total amount of money you wager on the round, including splits and double downs.
As an example, consider the DD numbers, reproduced here:
*******************************************************************
DD H17 DAS 66% pen 3 players
1:5 spread
RC<=0 $20.70
+1 $37.30
+2 $69.00
+3 & up $103.50
IBA 0.836%
Win/Hand $0.314
SD/Hand $56.054
SCORE 31.48
********************************************************************
What is your average bet? Well, since your IBA is 0.836%, and your win per hand is $0.314, we can say:
(IBA)*(Average Bet) = (Win/Hand)
Solving for Average Bet gives:
Average Bet = (Win/Hand)/(IBA) = $0.314/(0.00836) = $37.56
If you want that in units, rather than dollars, notice that your unit is $20.70, so your average bet in units is
Average Bet = $37.56/$20.70 = 1.814... units
As for the Standard Deviation, if we divide the result given by the average bet, we get the following:
$56.054/$37.56 = 1.49... average bets
Or, in units, we get:
$56.054/$20.70 = 2.71... units
These std. dev. values are in line with what Don has.
I didn't provide the Risk of Ruin, because I was using optimum betting, which corresponds to a RoR of 13.53%.
If you'd care to provide your BR and RoR numbers (offline, if you prefer), I can generate the proper betting scheules for you.
Dog Hand