Keyword Density is a difficult unit to measure, namely the number of keywords compared to the percentage of overall words on a page. If for example, in 100 words on one page there are 10 words for keywords, Keyword Densitymeans is 10%. So this is a Keyword Density ratio keyword with the overall data.
How do I create a page with the correct Keyword Density? There is no right answer. Some experts say that in one page as much as possible just to use Keyword Density of 5-7%. However, it is also not valid. What is clear, mutually agreed, the site with a keyword density that is too tight will be labeled as keyword stuffing (spammers). This will adversely affect the website and get a negative label by search engines.
However, Keyword Density within certain limits is also needed. This gives emphasis to certain keywords on search engines. Therefore, try to close up keywords, but not too tight so impressed excessive and not readable.