To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
Great gift for my 11 year old though took a couple stars off for inaccuracy. 7 years to digest gum? Old wives tale... not sure if there are others but lead to a discussion on not trusting everything you read