Furthermore, he adds, the selection of these metrics is conditioned by what is intended to be measured in each situation: effectiveness, efficiency and satisfaction.
Effectiveness
This consists of the accuracy with which users manage to accomplish specified objectives.
Success rate: Percentage of users who are able to complete a given task (recommended success rate > 75%).
Error rate: Corresponds to the total number of errors made among the total number of users tested (number of errors / number of users).
Efficiency
Misclick rate: by measuring the number of clicks, sites where the user croatia number data makes wrong clicks or a combination of both.
Time on Task : The time it takes the user to complete each task. In the redesign, it can serve as a comparative metric between the previous version and the redesign carried out or between our own prototype and its competitors.
Satisfaction
It consists of ease of use and satisfaction with the process to be followed to achieve the objectives. The following metrics can be used to measure satisfaction:
Single Ease Question (SEQ): «Post-task question in which the user measures satisfaction by evaluating, on a Likert scale, the ease with which the task was completed and its complexity.»
Net Promoter Score (NPS): “Overall satisfaction is measured based on the likelihood of recommendation by users. Depending on their score, users are divided into Detractors, Passives and Promoters.”
If you are interested in learning more about the user test analysis process, you can read the full post : “ Is there life beyond SUS? Metrics and quantitative analysis in usability testing” by Camino Pitalúa.