Waits & measures

XIII.6 November + December 2006
Page: 22
Digital Citation

The user is in the numbers


Authors:
Jeff Sauro

Measuring usability is an important topic that very much needs to be discussed. Being part of the conversation usually requires reading peer-reviewed journal articles in HCI. This, in turn, requires knowledge of the techniques and the jargon of statistics and experimental design (the foundation of numerical precision in empirical disciplines). To help move the discussions along, I've attempted to provide some clarification and explanations on statistical concepts you'll encounter: p-values, power, and confidence intervals. The examples come right from papers published in HCI proceedings. I've kept the discussion high-level and left out formulae, as it is more important to…




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