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View Full Version : Standard deviation in buy ins?



erdnase17
09-01-2011, 01:42 PM
I play heads up tournaments and I would like to calculate the risk of ruin for a given bankroll (given in buy in units) but for that I need my win rate and the standard deviation in buy-in units.

Tourney -> Results shows me the ITM% and the avg buy in, but how do I take into account the rake?

For example if I have played 5000 games and have won 52.1% with an average buy in of $2.92 can I assume my win rate in buy ins is 5000*0.521*(1 buy in)/5000 or do I have to discount the rake in the (1 buy in) factor because when I win a game I don't actually win $2.92 = 1 buy in, I win $2.92 - (average rake) instead?

olliepower
09-02-2011, 01:24 AM
I am forwarding your request to another mod who has more stats knowledge.

erdnase17
09-02-2011, 01:33 AM
By doing the calculations by hand I have found that the average buy in includes the rake obviously :-)
However I would still like to know if it is possible to obtain the standard deviation in buy-in units instead of the std dev in big blinds that is currently available from the reports.