Depends.
If you want to, to hit slow, be either an orc or a dwarf, and put in a lot in strength, and a little in intelligence, just in case you get a spell or something. You can put a little in dexerity if you are worried.
If you want to hit fast, and dodge fast Be either a dwarf or a human. Put in a lot (But not as much as if you want to hit slow) Strength in, and a lot of dexerity. You can put in a little intelligence too.
Oh yes, and don't forget about Constituion. That is important for both of the types.