May 2013
Beginner
320 pages
10h 3m
English
Content preview from Measuring the User Experience, 2nd Edition
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Chapter 8
Combined and Comparative Metrics
Contents
8.1.1 Combining Metrics Based on Target Goals
8.1.2 Combining Metrics Based on Percentages
8.1.3 Combining Metrics Based on Z Scores
8.1.4 Using Single Usability Metric
8.3 Comparison to Goals and Expert Performance
Usability data are building blocks. Each piece of usability data can be used to create new metrics. Raw usability data can include task completion rates, time on task, or self-reported ease of use. All of these usability data can be used to derive new metrics that were not available previously, such as an overall usability metric or some type of “usability ...
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