Check out this post on how to add Google Analytics to blogger sites.
It's really simple and the post above is a step by step process. Essentially all you need to do is add the Google tracking code directly before the </body> tag in your HTML template.
I'm already on Google Analytics as an administrator for my work websites so obviously didn't want to add my website profile as everyone at work would see it. That's when i discovered that just because you may have administrator access doesn't mean that you have your own 'Google Analytics account' - you just have a login. Within Google Analytics you can have access to a number of different accounts.
So if you're in the same situation as me make sure you click 'Create New Account...' in the top right of Google Analytics then you can edit who can see it, who has access and get tracking code specific to you. You will also become the main contact for that account as you input your name and details.