View Single Post
  #8  
Old 11-20-2007, 12:31 AM
LordMushroom2 LordMushroom2 is offline
Senior Member
 
Join Date: Nov 2006
Location: Norway
Posts: 459
Default Re: Calculating standard deviation of X hands

[ QUOTE ]
No just the s.d for one buy-in divided by the square root of n .

[/ QUOTE ]

But if I do the calculations to find the standard deviation of a high number of STTs (say 900), the answer seems wrong:

1/sqrt(900) = 0,033 buy-ins

Say the buy-in is $105 and my long run ROI is 10%. I then read the answer as "it is 68,3% certain (within 1 standard deviation) I will end up with a profit of $105*900*0,1=$9450 +/- $105*0,033=$3,47. That canīt be right.

$9450 +/- $3,47*900=$3123 on the other hand looks more realistic.
Reply With Quote