Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Top international reviews
5.0 out of 5 starsFollow a leader who has smoothed out all the bumps for you and given you a easy to follow road map to building a buzz in ...
Reviewed in the United States on September 2, 2014
Becky provides valuable insight on building a buzz. Follow a leader who has smoothed out all the bumps for you and given you a easy to follow road map to building a buzz in your own business. Buy the book now.