What are two primary methods for installing Google Analytics code on a website?

The selection of using Google's guidelines or Google Tag Manager as primary methods for installing Google Analytics code on a website is correct because both methods are widely recognized and effectively supported by Google.

Using Google's guidelines involves following the structured process provided by Google to manually embed the tracking code snippet directly into the HTML of a website. This method requires access to the source code of the website, ensuring that the tracking code is placed appropriately, typically in the header section, so that it loads on every page.

Google Tag Manager, on the other hand, is a powerful tool that allows webmasters to manage various tracking codes and tags without modifying the code of the website directly. With Tag Manager, users can add, edit, and manage Analytics tracking through a user-friendly interface. This method simplifies the process and minimizes potential errors, since it eliminates the need to alter the website's source code each time a change is needed.

These methods are favored for their efficiency, ease of use, and alignment with best practices for implementing Google Analytics. They also offer flexibility for future updates and adjustments, making them ideal for dynamic websites that may change over time.