One of the industry standards for determining customer satisfaction and loyalty is the Net Promoter Score system. If you haven’t heard of Net Promoter system, you’ve likely seen it in action: rating an experience or a product on a scale of 0 to 10. It is also the only industry satisfaction question to use a full 11-point scale. But do you know what each of the numbers actually means and how to use the question in a feedback experience?
https://www.questionpro.com/blog/net-promoter-score-system/