View Single Post
  #2  
Old January 13th, 2009, 05:01 AM

Omnirizon Omnirizon is offline
BANNED USER
 
Join Date: Dec 2007
Location: Illinois
Posts: 1,133
Thanks: 25
Thanked 59 Times in 36 Posts
Omnirizon is on a distinguished road
Default Re: Stealth Mathematics

according to RPG.net its the average of the dice without rerolls, divided by one minus the probability of a reroll:

OEbar = Xbar/(1-p)

= 25/(0.75)
= 29ish


however, the bigger your dice get the longer the tail on the probability curve gets and the more skewed your result is. it's rare to get a reroll, but when you do it makes a big difference.
Reply With Quote