Amazon.com: Customer reviews: Children’s German books: Where is Santa. Wo ist der Weihnachtsmann: Children's English-German Picture book (Bilingual Edition) (German Edition),German ... for children: Easter, Christmas etc. 1)
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.