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.
Why do they call it E Z? Hubby hoped to quit with it. He said it described well how he felt but then he got to the point where the book said he wasn't ready. I peaked beyond that part and did not see much information.