What Does "X% of Queries" Mean?

Over the past few months, we’ve seen a number of public statements from Google regarding algorithm updates that sound something like this:

Tweet from Matt Cutts - 0.3% of English queries noticeably affected

Tweet from Google - Fewer than 0.7% of queries noticeably affected


To read the full article: http://feedproxy.google.com/~r/seomoz/~3/-wBPEfKJh_w/what-does-x-of-queries-mean