How many multi sng's till good guess on ROI?

[youwereborn]

I have heard a lot of talk about how you need to play 1000 1 table sng's to have an even semi-accuarate idea of what your real ROI is, I was wondering how many 18 or 27 person sng's I would have to play to get the same confidence of the accuracy of my ROI numbers. Any help would be HUGE! thanks.

[uuDevil]

Check out this link (http://forumserver.twoplustwo.com/showflat.php?Cat=&Number=1941324&page=3&view=colla psed&sb=5&o=14&fpart=1) from the SnG FAQ. (http://forumserver.twoplustwo.com/showflat.php?Cat=&Board=singletable&Number=2540909 &Forum=All_Forums&Words=%2Bwinning%20%2Bsng%20%2Bc onfidence&Searchpage=0&Limit=25&Main=2540909&Searc h=true&where=bodysub&Name=&daterange=1&newerval=1& newertype=y&olderval=&oldertype=&bodyprev=#Post254 0909)

[youwereborn]

thank you for this site, I might not understand these charts right but it seems that this chart is just for single table sit and go's, is there a similar chart for 18 or 27 person sng's?

[pzhon]

Standard deviations for multitable tournaments may be slightly more sensitive to your playing style and ability than is the case for single table SNGs.

I don't record all SNGs I play, but after 15 multitable SNGs on PokerStars (6 3-table, 9 2-table), my SD is 2.6 buy-ins/tournament. I would estimate that after n tournament, the standard deviation of my ROI would be about 260%/sqrt(n). By contrast, my standard deviation for single table SNGs is about 1.7.

[youwereborn]

Thanks,good info!

[Siegmund]

Taking the simplistic approach of assuming you have a 1/n chance of finishing in any seat in a tournament...

The standard 5-3-2 payout structure has a SD of 1.67 buyins. At UB a 20-table SnG still pays only 3 places with double the prizes, for a SD of 2.82 buyins. I have no experience with other sites' multi-table SnGs.

For 1-table SnGs I use a rough rule of thumb that I expect each tournament to run about an hour, and based on the "10 BB/hr" rule for ring games, I equate an hour of $1/2 to a $10 SnG, an hour of $2/4 to a $20 or $25 SnG, etc.

If the average length of a 2-table SnG is between 1 1/2 and 2 hours, you can continue to treat a multitable SnG as representing similar variance to the same amount of time in a ring game with a big bet 1/5 of the SnG buyin.