The most important thing you should know when looking for traffic sources is how much each visitor to your site is worth. Now, it may take a few months for you to find an accurate figure, but it’s extremely valuable data. If I know that each visitor to my site is worth 50 cents, then I can simply find paid traffic sources that cost less than 50 cents per visitor and make a profit. This is when things really start to happen.
I was honestly looking for a little more from the article. If I make a video with 1 million views, and you have a video with 1,000 views, its possible that you made more money than I did… but not very likely. If you looked at a large sample of data, you could definitely find, ON AVERAGE, the amount of money made per view. If there is a relationship between number of views and number of engagements (which there is), then there must exist a relationship between views and money made.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.