Human by default is the ultimate jack of all trade master of none. It has +50 to all stat but needs to remain pure to keep it. Each body part you head away from human (including inner mutations) slowly reduce the 50 to 0.
Other races have different stat cap and unique ability furthermore inner mutations perks can increase your stat by +5 to each.
Other races have different stat cap and unique ability furthermore inner mutations perks can increase your stat by +5 to each.