Re: Standard deviation for SNG\'s and sample size for CASH games
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For each 1 sng , your standard deviation is +1 unit from your mean .
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making sure i get this . . .
so the mean is (excluding rake effect) $17.25 for a $115 (because that's the ROI (15%) with a 60% winrate). correct?
so then i just add/subtract one unit ($115) from the mean. 1 SD would result in +$132.25/-$97.75 for me 68% of the time. am i right?
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Correct . I've actually included the rake in my examples to make it even more accurate .
So if your a 60% winner at the $(100+5) games , then your ROI is 14.28% . This means that approximately 68% of the time , you will have an ROI between 114.28% to -85.72% after your first sng .
This type of reasoning only applies after you've played multiple games because the results are not normally distributed until after several sng's . After 30 sessions , you can make all sorts of claims about your sample ROI .
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