Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
A valuable tool for any parent feeling a at a loss as to why their teenage daughter has changed. It explained the transition into adulthood in an uncomplicated way. I now don't feel like it's something we are doing wrong as parents, it is our girls preparing themselves to enter adulthood.