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.
As always my son loves these books. Hes 10 now but has read them from when they first came out when he was around 8 and he still cannot wait for the latest one to come out. Quick and easy for him to read but he reads them again and again and laughs every time!