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 analyses reviews to verify trustworthiness.
Bought 3 Disney DVDs from Amazon, all timeless classics. Keeps my little girl entertained for hours (and brings back plenty of happy childhood memories for me also, so I won't pretend that she's the only one watching them!) lol.