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.
this book was great. I laughed a lot...and a lot the story line is hilarious especially Geraldine the girl shes funny with the stuff she does. ps not girl so its not just a girl book its both probably recommended ages 12-16