The Numbers Don't Match

I look at the stats for my little blog and can't figure them out.  When I look at page views for the day, it doesn't match posts looked at.  I decided that page views means how many people saw my blog for the day.  The posts would be if somebody who visited my blog clicked on a particular post.  But when I go to audience that number for the day doesn't match anything else.  I don't suppose it matters, but I'm curious.