Key Performance Indicators are critical measures of progress toward an end goal.
Time on task measures how long it takes for a user to complete a task.
The average time on task is usually communicated as the final KPI. The shorter the processing time, the better the user experience.
Use of navigation vs search indicates the number of people who use the navigation bar, compared to the number of people who use the search functionality.
the goal is to understand how users interact with the navigation and search functions of your product and maintain the balance between them.
User error rates indicate the part of the design that causes the user to make errors.
keep track of the parts of the design where the user makes mistakes while completing the tasks you’ve assigned.
Drop-off rates show how many users abandon the experience. In other words, how many users quit before reaching the end of their goal.
Conversion rates indicate how many users complete the desired action.
Conversion rates are the opposite of drop-off rates.
Effectiveness — can users successfully achieve their goals?
Efficiency — how efficient it is to achieve that goal?
Satisfaction — was the experience satisfactory?
The 10 usability scale questions are:
I think that I would like to use this product frequently.
I found the product unnecessarily complex.
I thought the product was easy to use.
I think that I would need the support of a technical person to be able to use this product.
I found the various functions in this product were well integrated.
I thought there was too much inconsistency in this product.
I imagine that most people would learn to use this product very quickly.
I found the product very cumbersome to use.
I felt very confident using the product.
I needed to learn a lot of things before I could get going with this product.
Net promoter score
Participants rate the question, “Would you recommend this product to a friend or colleague?” on a scale of 0 to 10.
Promoters — participants who give a rating of 9 or 10, which means they would recommend your product to others.
Passive — participants who give a rating of 7 or 8, which means they are satisfied with your product, but they may not recommend it to their friends or colleagues.
Detractors — participants who give a rating of 0 to 6, which means they would warn people away from your product or service.
