title: What does "Create Statistics" do in SQL Server 2005?
body: <p>The Database Tuning Advisor is recommending that I create a bunch of statistics in my Database.  I'm something of a SQL n00b, so this was the first time I'd ever come across such a creature.  The entry in MSDN was a little obtuse - could someone explain what exactly this does, and why it's a good idea?</p>