Calculating Standard Deviation

[cheesies 0]

How do I calculate my SD? I found this link:http://www.bet-the-pot.com/bankroll-standa...ion-page43.htmlI play sngs and mtts mostly, and don't really do the 'session' thing that the example uses (towards the bottom) so I'm not totally sure how to do it. I know my ROI and hourly rate - is that enough to calculate my SD, or do I need more/other types of info? Thanks

[sholden 0]

How do I calculate my SD? I found this link:http://www.bet-the-pot.com/bankroll-standa...ion-page43.htmlI play sngs and mtts mostly, and don't really do the 'session' thing that the example uses (towards the bottom) so I'm not totally sure how to do it. I know my ROI and hourly rate - is that enough to calculate my SD, or do I need more/other types of info? Thanks

You can treat each SNG as a "session". SNGs and MTTs are different enough that you'll want to track the seperately anyway. You could also group multiple SNGs into a session if you multi-table - after all your max-loss (and max-win) is higher multitabling SNGs but your variance should be lower (you don't usually win or lose all of them at the same time...)

[cheesies 0]

Thanks for your reply - So for each sng I have to do the result squared/time taken? Thats gonna take aaaages, is there a quicker way? (apart from using pokertracker...) I also generally only keep daily records of my results (rather than individual games), as well as hours played and no. of sngs played. Would doing it as daily sessions be too vague/broad?

[sholden 0]

Thanks for your reply - So for each sng I have to do the result squared/time taken? Thats gonna take aaaages, is there a quicker way? (apart from using pokertracker...) I also generally only keep daily records of my results (rather than individual games), as well as hours played and no. of sngs played. Would doing it as daily sessions be too vague/broad?

Daily is fine, it will smooth things out a bit (unless you win/loss all your games in a day...) but that shouldn't matter...

[cheesies 0]

I've now calculated my SD, albeit over only 8 days (or 'sessions'). Now i'm left with a number - 110.5. What does this number actually mean? I originally wanted to calculate my SD so I could do confidence intervals, but does my SD have any meaning of its own?Thanks again, I'm not a particularly mathsy person.

[Actuary 3]

You can treat each SNG as a "session". SNGs and MTTs are different enough that you'll want to track the seperately anyway. You could also group multiple SNGs into a session if you multi-table - after all your max-loss (and max-win) is higher multitabling SNGs but your variance should be lower (you don't usually win or lose all of them at the same time...)

hi.You probably are wrong about the bolded part, please explain.Lower than the variance of what?

[uncooper 1]

hi.You probably are wrong about the bolded part, please explain.Lower than the variance of what?

I think he meant that the variance would be lower than if OP spent the same number of hours single-tabling. Which isn't particularly useful info, since the level of variance should be almost exactly the same over a stretch of X number of SNG's, over any amount of time/multi/single tabling.

[Actuary 3]

I think he meant that the variance would be lower than if OP spent the same number of hours single-tabling. Which isn't particularly useful info, since the level of variance should be almost exactly the same over a stretch of X number of SNG's, over any amount of time/multi/single tabling.

This concept comes up a good bit; and if there is anything I should be able to contribute here, it is with this topic.The bolded statement you wrote is right on. We can assume for this purpose that our level of success is independent and identically distributed (i.i.d.) for each gameBut, if you re-read what sholden said, he implies that the variance is lower mutitabling, even though the potential max loss/gain is more.