I am creating a spreadsheet to compute average damage for my party. One of the issues that I am having is calculating average damage for the target of our Hybrid Avenger-Assassin's Avenger attacks against his oath of enmity. I have the same issue with our Ranger's split the tree power.
I have poked around a bit and think I have the correct formula, but I want to be sure. Here is the formula I am using for his attacks:
(1-((A)/20)^2 - 39/400)*(B) + ((A/20)^2)*C +(39/400*(D))
- A Roll needed to hit
- B Average Damage
- C Miss damage if any (for Dailies)
- D Max Damage
Is this the correct formula?