06.2.3 · Skill in Product metrics
Task success
Whether users complete what they came to do.
Task success measures completion rate, time on task and errors for key tasks. It is the most direct measure of usability. It comes from both analytics and usability tests.
Resources
2- articleStart hereSuccess rate: the simplest usability metric ↗Jakob Nielsen (NN/g) · 2001 · 8 min
How to measure whether people complete their tasks, including partial success. Old, and still the clearest explanation.
- articleGo deeperMeasuring the user experience on a large scale: user-centered metrics for web applications ↗Kerry Rodden, Hilary Hutchinson, Xin Fu (Google) · 2010 · 10 pages
The original HEART paper. Happiness, engagement, adoption, retention and task success, plus the goals-signals-metrics process for choosing them.
Tools
none yetTools for this topic are being researched.