to add from lodestone :

Attributes and Their Effects

STR*-*Increases damage dealt by physical attacks Increases damage prevented when blocking attacks with a shield

VIT*-*Reduces damage taken from physical attacks Increases maximum HP

DEX*-*Increases accuracy of physical attacks Increases chances of evading physical attacks Increases critical hit rate of physical attacks and resulting damage Increases parry rate for certain weapons

INT*-*Increases damage dealt by magic attacksMND*-*Reduces damage taken from magic attacks Increases maximum MP

PIE*-*Reduces chances of your magic attacks being resisted Increases your chance of resisting magic attacks of others

And from plsying these are pretty spot on. Just seem weak atm. Even in ffxi stats were sorta set up like this