To help clear up some discussion on the topic.
1 point of Spell Power = +0.2 magical damage per second (DPS)
A mage's base Spell Power is the sum of (50% Intelligence) + (50% Wisdom).
A cleric's base Spell Power is the sum of (75% Wisdom) + (25% Intelligence).
1 point Dexterity = 0.5 points to physical Critical Attack value
1 point Dexterity = 1 point to Dodge value
A warrior's base Attack Power is the sum of 25% Dexterity + 75% Strength.
A rogue's base Attack Power is the sum of 50% Dexterity + 50% Strength.
1 point Strength = 1 point to Attack Power value
1 point Strength = 0.4 points to physical Critical Attack value
1 point Strength = 1 point to Block Rating
1 point Strength = 1 point to Parry Rating
A warrior's base Attack Power is the sum of 75% Strength + 25% Dexterity.
A rogue's base Attack Power is the sum of 50% Strength + 50% Dexterity.
**1 point Endurance = +9 maximum Health value
**1 point Armor = 0.017% Reduction in all Damage
Dodge 1pt = +0.024% chance to dodge an attack
Hit 1pt = +0.01% to physically hit the target
Parry 1pt = +0.28% chance to parry an attack
Physical Crit 1pt = +0.41% Chance of Critical Hit
Attack Power 1pt = +0.1 Physical DPS
Spell Focus 1pt = -1% chance for spell to be resisted
Spell Crit 1pt = +0.04% chance to Critical Hit
Spell Power 1pt = +0.2 DPS