If you navigate to Settings > SEO > Google Analytics, this is where you can paste in your Google Analytics html script that was given to you when you created your Google Analytics account. This allows Google to externally track your site's traffic activity on a daily basis and provide reporting to you. You will log into Google.com/analytics to view your reports. You will need to have and use a firstname.lastname@example.org (or google apps) email address to sign up and view your reports as Google is forcing this option. Note: Google will instruct you to insert this code on every page you want to track. Do not insert the code on your site's pages. Insert the code into this settings area once, save, and we'll then include it on every page of your site including system driven pages.
You can access Google Analytics here to view your site's traffic data.
How do I set up a Google Analytics account?
Our Digital Marketing team put together a document for you that you can follow here.