Amazon.com: Customer reviews: I Spy With My Little Eye - Christmas: Can You Find Santa, Rudolph the Red-Nosed Reindeer and the Snowman? | A Fun Search and Find Winter Xmas Game for Kids 2-4! (I Spy Books for Kids 2-4 Book 5)
Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.