System usability scale

The System Usability Scale (SUS) is a way to measure how useful and easy to use a product or system is. It consists of 10 questions that people answer on a scale of 0-5, with 0 being "strongly disagree" and 5 being "strongly agree". The questions are about how easy to use, how efficient, and how enjoyable the system is. When all the scores are added up, they are averaged and then compared to the scores of other products or systems so that the one with the highest score is considered the most user-friendly.