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.
I do not recommend buying the bird basketball hoop. I was unable to put it together as the pole was to thick to fit in the hole. I have made 3 attempts to contact seller but no reply, It has put me off buying on Amazon now.