Strength: Increases the base damage and *critical hit chance for melee weapons by the ratio for that particular weapon.
Dexterity: Increases the base damage and *critical hit chance for melee weapons by the ratio for that particular weapon.

Sword
Strength/Dexterity Ratio: 75/25


means? for each point of str i put in it = ?
and for each point of dex i put in = ?

keep your str and dex at a 75/25 ratio. pretty simple, really. If you have 25 dex, you want 75 str. If you have 50 dex, you want 150 str. etc etc