论文信息 - Determining Usability Test Sample Size

Determining Usability Test Sample Size

Virzi (1992), Nielsen and Landauer (1993), and Lewis (1994) have published influential articles on the topic of sample size in usability testing. In these articles, the authors presented a mathematical model of problem discovery rates in usability testing. Using the problem discovery rate model, they showed that it was possible to determine the sample size needed to uncover a given proportion of problems in an interface during one test. The authors presented empirical evidence for the models and made several important claims:

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