Keyword density is the number of times your focus keyword occurs on a web page, compared to the total text of that page. If you write a post for your blog, you should have thought about what keyword you want to rank that post for. In our Yoast SEO plugin, that keyword is what we call …Read: "Keyword density in Yoast SEO: what you should know"
The Google algorithm decides where web pages rank in the organic search results. What the Google algorithm does exactly remains secret. However, through Google’s communication and some testing of our own we do get clues on what Google deems important for a web page to rank. We share these findings in our blog post.