Best practice for Bloggers to paste the Google Analytics Code into your blogspot site.

Open the blogger admin
got to Layout - Site Elements
Create a new gadget, best at the bottom of the site elements
Select HTML/Javascript as the type of widget
DO NOT give a title because then visitors will see nothing of your gadget containing your Google Analytics code. Repeat, leave the title EMPTY!

That should be it, Google usually takes a bit of time to start tracking. Wait a day or so.

Happy go lucky.