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.
Good job Waveland! I bought this off of Chegg and was excited to read it. It would be really nice if the equations were complete! YEA. I thought it was only Chegg but check the Kindle sample from Amazon, notice anything about the equations?? How the hell did this slip by the editor??!!