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.
The annoying thing about some doorstops is that they're too small and light and therefore don't hold the door open in all situations. These don't have that problem as they're a good size constructed solidly.