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.
Lovely little bookcase for the living room and really easy to put together. Not so sturdy if you have a climbing toddler on your hands but the extra storage baskets are really handy. We manage to cram in all her books (she has lots) but it can look a bit messy that way and difficult for them to get books out by themselves.