What is an Acceptable Level of Quality for Usability?
September 17, 2004
Usability measurements involve human performance and because human behavior is inherently error prone, reaching the goal of 6σ isn’t necessary to proclaim success. Manufacturing companies that are considered producing “high-quality” products are usually somewhere between 4σ and 5σ. The benchmarks and targets that we set in our tests will necessarily need to be more forgiving