i want to calculate the content velocity of each page in my website.
The questions is: how long does the website take to load a page?
The subject is a page and not a user.
Is there a metric? Or, can I build a calculated metric?
There is no OOB metric that measures the load time of a page.
You may have to use the getLoadTime plugin in your Appmeasurement/s_code to capture the page load time in a custom event.
And later you can build a calculated metric to get the average load time of the page.
Hope this helps.