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.
Loved it, better than the first book. Nice story and character interplay between Rodric, protagonist, his little brother and mom. Felt sometimes things were forced but I was always simling, kind of books which won't give you guffaws but definitely a lasting smile through whole read. Quality of books and pages is also good. Definitely worth a read a book or two from the whole series.