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.
Love this book! I bought it for my one year old son and budding Giants fan. It's not a story book, but it does show the alphabet and baseball related things to each letter. "B - baseball, bat, base", "I - innings, infield, injury". Gotta teach them young! ;)