Quantifying the User Experience av Jeff (Usability Metrics and Statistical Analyst Measuring Usability LLC CO USA) Sauro, James R (Senior Human Factor

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<i><p>Quantifying the User Experience: Practical Statistics for User Research, Second Edition,</i> provides practitioners and researchers with the information they need to confidently quantify, qualify, and justify their data. The book presents a practical guide on how to use statistics to solve common quantitative problems that arise in user research. It addresses questions users face every day, including, Is the current product more usable than our competition? Can we be sure at least 70% of users can complete the task on their first attempt? How long will it take users to purchase products on the website? </p><p>This book provides a foundation for statistical theories and the best practices needed to apply them. The authors draw on decades of statistical literature from human factors, industrial engineering, and psychology, as well as their own published research, providing both concrete solutions (Excel formulas and links to their own web-calculators), along with an engaging discus