I tagged this thread at the bottom, with where you'll find a more in-depth explanation of the answers you're looking for. (Click the actual article link; not the links to the other threads that share this tag.)
Also, the value in the parenthesis is the approximate average damage plus, or minus, the given amount, so 7 + 2.26 (9.26) or 7 - 2.26 (5.26). Basically, 7 "give or take" 2.26, as margin of error.
Even reading everywhere, the damage stat still remains not clear to me. For instance here:
"The Hero's min/max hit is taken from his weapon which for the War hammer is 5 to 25 (15 ±4.3)."
So, I would calculate:
Min: 15-4.3 = 10.7
Max: 15+4.3 = 19.3
If so, how to state that "War Hammer is 5 to 25"? Why is it not 11 to 19?
Thank you for the reply.
Because damage value of an attack is determined via triangular distribution, it means that values closer to the middle of the range are more likely than those which are closer to the ends.
Basically, in your example, 5-25 would be the actual damage range (as in your weapon will deal from 5 to 25 points of damage...), while 10.7-19.3 would be the most likely damage range (...but it will deal from 10 to 19 points of damage most of the time).