Extremely high average product ratings, between 4.5 and 5 stars, make people skeptical and generate lower sales than ratings between 4 and 4.5 stars.
This is based on just 3 companies, so I would be wary of any findings. Even if the total # of observations is large, there might be bias from the company geo/vertical/demo etc.
4.3 stars sells more than 4.9 stars
This is based on just 3 companies, so I would be wary of any findings. Even if the total # of observations is large, there might be bias from the company geo/vertical/demo etc.