The following information is regarding the minimum damage formula. Maximum damage is about 2 times the minimum. This calculation depends on what class you are and what weapon or skill you are using which you can buy through using Metin2 gold, see Stats Damage formulas for additional information. For example, if youre a First job dexless Warrior using a Sabre, One-Handed Sword, 32 Weapon Attack, we can set up the minimum damage formula as note that Mastery has been set to 0.6 in this example.
Because of the division, the amount of STR required to equal 1 weapon attack is proportional to the amount of damage you want to deal. Lets say you want your minimum damage to be 100. With the Sabre and 4 dex, you would need 143 STR, the values are rounded to the nearest integer. If you acquired one extra weapon attack (33 instead of 32), by scrolling something or acquiring a new piece of equipment in game, it would only require 138 STR (138.43996) to reach a minimum of 100 damage.