I would think that if you have 100 words, and one of those words was your keyword your ratio would be 1%.
What about if you have 100 words, and a two word keyphrase? Perhaps the two keywords do not appear together in the page, then how does it work?
If anyone has knowledge of this sorta thing, or an article somewhere I would appreciate any info you may have. I wrote a small web script to calculate keyword density, but when I use some off the shelf products they are generally not very close.
Keyword density is the number of occurences of a keyword divided by either the total number of words (unique words or not, up to you..). To be a 2 words keyphrase it needs to be side by side and repeated.. Cheers,
Actually it dosnt necessasarily need to be side by side. Dosnt hurt to have a few occurances though. I would concentrate on title tag and meta discription though.