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.
An engaging and informative read. Nicole presents in depth science based information written in an easy to digest form and incorporated with the stories of the farmers who are putting these principles into practice on the ground. Nicole is a gifted teacher and writer who presents science based, practical and actionable steps you will feel confident to put into practice straight away. Essential reading.