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Old 11-14-2004, 03:13 AM
uuDevil uuDevil is offline
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Join Date: Jul 2003
Location: Remembering P. Tillman
Posts: 246
Default Re: Question about Winrate

[ QUOTE ]
ah cool. So say I know my current winrate after a small sample size of hands and my standard deviation. How can I find out the range of my true winrate?

[/ QUOTE ]

pzhon showed the idea above.

The interval

WR +/- 2*SE

will include your true win rate with 95.4% confidence, where SE= SD/sqrt(N), SD and WR are in BB/100, and N= #hands (in hundreds)

The factor 2 can be varied depending on the desired confidence:

1 -> 68% confidence
1.96 -> 95% confidence
3 -> 99.7% confidence

The greater the desired confidence, the wider the interval.
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