This plugin allows you to insert Google Analytics Content Experiments code into your site.
Using the built-in custom fields in WordPress, you can insert Google Analytics Content Experiments code into any custom post type that supports custom fields.
Create a new custom field labeled “google_content_experiment_code” with the value being the code that you get from Google Analytics and click Save. This will insert the content experiment code into the head of your html document for the page or post specified.
/wp-content/plugins/simple-google-content-experiments
directory, or install the plugin through the WordPress plugins screen directly.