内容简介

Description

You're being asked to quantify usability improvements with statistics. But even with a background in statistics, you are hesitant to statistically analyze the data, as you may be unsure about which statistical tests to use and have trouble defending the use of the small test sample sizes associated with usability studies.

作品目录

Dedication

Acknowledgements

About the Authors

Chapter 1: Introduction and How to Use This Book

Chapter 2: Quantifying User Research

Chapter 3: How Precise Are Our Estimates? Confidence Intervals

Chapter 4: Did We Meet or Exceed Our Goal?

Chapter 5: Is There a Statistical Difference between Designs?

Chapter 6: What Sample Sizes Do We Need? Part 1: Summative Studies

Chapter 7: What Sample Sizes Do We Need? Part 2: Formative Studies

Chapter 8: Standard Usability Questionnaires

Chapter 9: Six Enduring Controversies in Measurement and Statistics

Chapter 10: Wrapping Up

Appendix

Index