A character with high strength and agility will swing slowly but hit powerfully. One with high agility and speed but low strength will land many weak hits. High strength and speed but low agility will miss a lot, but
you'll swing fast and strong enough to make up for it.
'''Intelligence''' should be kept at least above 50, as you will be using spells frequently. Your character will be configured with a magicka supply of (3*INT), so you may feel motivated to increase that intelligence attribute as you level up.