1000 hour sample size

[goodguy_1]

I am reposting this part of a post on th internet forum to get some feedback from the math wonks over here [img]/images/graemlins/smile.gif[/img]


"Btw I passed 1000 hours online in my main limit game about 3 months ago.
You would think after a 1000 hours your winrate would be fairly accurate.Well my hourly average fell 18% in the next 2 months which blew me away..now it's back up there ..but just goes to show you how insignificant sample sizes are of 100,200 even 500 hours.BruceZ help or Homer???
How accurate should your winrate be after a 1000 hour sample size.I know its in one of Mason's PokerEssays books?Too lazy to investigate it. "


What's the probabity of my winrate falling 18% after a 1000 hour sample size??

thnx Lee