Things that affect your chance to-hit something:
– Enchanted bonus on your weapon
– Your level vs. their level (the higher they are than you, the harder they’ll be to hit)
– The number of people fighting the same opponent – this isn’t group dependant.
– Weapons Styles with bonus to-hit
– Str, Dex, Qui…NONE of the base stats have any effect on your chance to-hit

Things that affect your chance to NOT get hit by something:
– Enchanted bonus on your armor
– Weapon styles with bonus to defense
– Dex affects your chances to Block & Parry
– Dex & Qui affects your chances to Evade
– Your level vs. their level (the lower the level they are to you, the harder it is for them to hit you)
– Armor Factor on your Armor affects the chance to negate a blow (seen as a miss)
– Absorb % on your armor affects how much dmg taken when you do get hit
– AF also decreases the damage taken