Dejan Batanjac

It is worth to mention that WordPress doesn’t have Google Analytics support out-of-the-box. 
To add the Google Analytics code for your WordPress website you need to relay either on the WordPress theme or plugin.
Once you installed the plugin, please navigate to the Settings section in the WordPress dashboard.
From the Settings section select Google Analytics Setup and add your tracking 
code. From now on, on all your website pages you will have the tracking code 
enabled.
Also check <a href="https://github.com/dejanbatanjac/ga-analytics" rel="nofollow ugc">GA Analytics on Github</a>. 
NOTE: It requires at least WordPress 4.5.
Here is the <a href="https://www.google.com/analytics" rel="nofollow ugc">link to Google Analytics</a>.

GA Analytics

A handy way to insert full Google Analytics tracking code on all pages.

Aaron D. Campbell

WP Google Analytics makes it easy to track your site’s usage, with lots of 
helpful additional data.
Features:
<ul>
<li>Uses Google’s asynchronous tracking method which is faster and more reliable.</li>
<li>Automatically tracks site speed</li>
<li>Option to log outgoing links as events</li>
<li>Option to log 404 errors as events</li>
<li>Use custom variables in Google Analytics to track additional data on pageviews including:
<ul>
<li>Author</li>
<li>Categories</li>
<li>Tags</li>
<li>Context (such as home, category, post, author, etc)</li>
<li>Date</li>
<li>Logged in</li>
<li>Anything – Use the built-in filter to add your own!</li>
</ul>
</li>
<li>Allows you to ignore any user roles (administrators, editors, authors, etc)</li>
</ul>
Collaborate on the plugin: <a href="https://github.com/aaroncampbell/wp-google-analytics" rel="nofollow ugc">WP Google Analytics</a>
Brought to you by <a href="http://aarondcampbell.com/" title="WordPress Plugins" rel="nofollow ugc">Aaron D. Campbell</a>

WP Google Analytics

Lets you use Google Analytics to track your WordPress site statistics

GA Analytics vs WP Google Analytics