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.
If you love Guy Allen’s columns in Motorcycle Trader, then you’ll enjoy this collection of columns. Self depreciating humour and a self confessed motorcycle hoarding disorder meshes beautifully with Guido’s deep knowledge of a motorcycle industry insider. Great read.