To calculate the overall star rating and percentage breakdown by star, we do not 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.
I've been reading a lot during the past two years. Hacking Growth by Sean Ellis & Morgan Brown is right at the top of my favourites - list at the moment. Idea is simple build team, use data and be creative. If you seek data-driven growth for your company pick up this book, take a weekend for yourself, stock up your tea supply and enjoy the ride.
Absolutely fantastic book. I work for a large organisation and didn't think it would be possible to do growth in the way I've read about before but this book has given me some great ideas. I've got the audio book too but this book is useful for reference especially with work colleagues. 5 stars definitely. Don't miss out on their awesome website too.