Itqualityassurance
How to measure perceived usability?
Self-Reported Metrics
Perhaps the simplest way to look at overall perceived usability is to take an average of the individual task-based ratings. Of course, this assumes that you did in fact collect ratings (e.g., ease of use) after each task. If you did, then simply take an average of them.
What is perceived usability?
Perceived usability reflects users' subjective feelings toward products from the perspective of usage (Yang et al., 2012. (2012). DEEP: Design-oriented evaluation of perceived usability. International Journal of Human-Computer Interaction, 28(5), 308–346.
