Quantifying the User Experience

1st Edition

Practical Statistics for User Research

Authors: Jeff Sauro James Lewis
Paperback ISBN: 9780123849687
eBook ISBN: 9780123849694
Imprint: Morgan Kaufmann
Published Date: 16th March 2012
Page Count: 312
38.95 + applicable tax
30.99 + applicable tax
49.95 + applicable tax
Unavailable
Compatible Not compatible
VitalSource PC, Mac, iPhone & iPad Amazon Kindle eReader
ePub & PDF Apple & PC desktop. Mobile devices (Apple & Android) Amazon Kindle eReader
Mobi Amazon Kindle eReader Anything else

Institutional Access


Description

Quantifying the User Experience: Practical Statistics for User Research offers a practical guide for using statistics to solve quantitative problems in user research. Many designers and researchers view usability and design as qualitative activities, which do not require attention to formulas and numbers. However, usability practitioners and user researchers are increasingly expected to quantify the benefits of their efforts. The impact of good and bad designs can be quantified in terms of conversions, completion rates, completion times, perceived satisfaction, recommendations, and sales. The book discusses ways to quantify user research; summarize data and compute margins of error; determine appropriate samples sizes; standardize usability questionnaires; and settle controversies in measurement and statistics. Each chapter concludes with a list of key points and references. Most chapters also include a set of problems and answers that enable readers to test their understanding of the material. This book is a valuable resource for those engaged in measuring the behavior and attitudes of people during their interaction with interfaces.

Key Features

  • Provides practical guidance on solving usability testing problems with statistics for any project, including those using Six Sigma practices
  • Show practitioners which test to use, why they work, best practices in application, along with easy-to-use excel formulas and web-calculators for analyzing data
  • Recommends ways for practitioners to communicate results to stakeholders in plain English
  • Resources and tools available at the authors’ site: http://www.measuringu.com/

 

 

Readership

Usability and user experience practitioners, software and web-development professionals, marketers, information architects, interaction designers, business analysts, market researchers, and students in these and related fields

Table of Contents

Dedication

Acknowledgments

About the Authors

Chapter 1. Introduction and How to Use This Book

Introduction

The Organization of This Book

How to Use This Book

Key Points from the Chapter

Chapter Review Questions

References

Chapter 2. Quantifying User Research

What is User Research?

Data from User Research

Usability Testing

A/B Testing

Survey Data

Requirements Gathering

Key Points from the Chapter

References

Chapter 3. How Precise Are Our Estimates? Confidence Intervals

Introduction

Confidence Interval for a Completion Rate

Confidence Interval for Rating Scales and Other Continuous Data

Key Points from the Chapter

Chapter Review Questions

References

Chapter 4. Did We Meet or Exceed Our Goal?

Introduction

One-Tailed and Two-Tailed Tests

Comparing a Completion Rate to a Benchmark

Comparing a Satisfaction Score to a Benchmark

Comparing a Task Time to a Benchmark

Key Points from the Chapter

Chapter Review Questions

References

Chapter 5. Is There a Statistical Difference between Designs?

Introduction

Comparing Two Means (Rating Scales and Task Times)

Comparing Completion Rates, Conversion Rates, and A/B Testing

Key Points from the Chapter

Chapter Review Questions

References

Chapter 6. What Sample Sizes Do We Need?

Introduction

Estimating Values

Comparing Values

What can I Do to Control Variability?

Sample Size Estimation for Binomial Confidence Intervals

Sample Size Estimation for Chi-Square Tests (Independent Proportions)

Sample Size Estimation for McNemar Exact Tests (Matched Proportions)

Key Points from the Chapter

Chapter Review Questions

References

Chapter 7. What Sample Sizes Do We Need?

Intro

Details

No. of pages:
312
Language:
English
Copyright:
© Morgan Kaufmann 2012
Published:
Imprint:
Morgan Kaufmann
eBook ISBN:
9780123849694
Paperback ISBN:
9780123849687

About the Author

Jeff Sauro

Dr. Jeff Sauro is a six-sigma trained statistical analyst and founding principal of MeasuringU, a customer experience research firm based in Denver. For over fifteen years he’s been conducting usability and statistical analysis for companies such as Google, eBay, Walmart, Autodesk, Lenovo and Drobox or working for companies such as Oracle, Intuit and General Electric. Jeff has published over twenty peer-reviewed research articles and five books, including Customer Analytics for Dummies. He publishes a weekly article on user experience and measurement online at measuringu.com. Jeff received his Ph.D in Research Methods and Statistics from the University of Denver, his Masters in Learning, Design and Technology from Stanford University, and B.S. in Information Management & Technology and B.S. in Television, Radio and Film from Syracuse University. He lives with his wife and three children in Denver, CO.

Affiliations and Expertise

Usability Metrics and Statistical Analyst, Measuring Usability LLC, CO, USA

James Lewis

Dr. James R. (Jim) Lewis is a senior human factors engineer (at IBM since 1981) with a current focus on the measurement and evaluation of the user experience. He is a Certified Human Factors Professional with a Ph.D. in Experimental Psychology (Psycholinguistics), an M.A. in Engineering Psychology, and an M.M. in Music Theory and Composition. Jim is an internationally recognized expert in usability testing and measurement, contributing (by invitation) the chapter on usability testing for the 3rd and 4th editions of the Handbook of Human Factors and Ergonomics, presenting tutorials on usability testing and metrics at various professional conferences, and serving as the keynote speaker at HCII 2014. He was the lead interaction designer for the product now regarded as the first smart phone, the Simon, and is the author of Practical Speech User Interface Design. Jim is an IBM Master Inventor Emeritus with 88 patents issued to date by the US Patent Office. He serves on the editorial board of the International Journal of Human-Computer Interaction, is co-editor in chief of the Journal of Usability Studies, and is on the scientific advisory board of the Center for Research and Education on Aging and Technology Enhancement (CREATE). He is a member of the Usability Professionals Association (UPA), the Human Factors and Ergonomics Society (HFES), the ACM Special Interest Group in Computer-Human Interaction (SIGCHI), past-president of the Association for Voice Interaction Design (AVIxD), and is a 5th degree black belt and certified instructor with the American Taekwondo Association (ATA).

Affiliations and Expertise

Senior Human Factors Engineer, IBM, FL, USA

Reviews

"Quantifying the User Experience will make a terrific textbook for any series of UX research courses…I highly recommend this book to anyone who wants to integrate quantitative data into their UX practice."--Technical Communication, May 2013
"…as a whole, it provides a pragmatic approach to quantifying UX, without oversimplifying or claiming too much. It delivers what it promises. This book is valuable for both practitioners and students, in virtually any discipline. It can help psychologists transfer their statistical knowledge to UX practice, practitioners quickly assess their envisioned design and analysis, engineers demystify UX, and students appreciate UX’s merits."--ComputingReviews.com, March 19, 2013
"The most unique contributions of this book are the logic and practicality used to describe the appropriate application of those measures…Sauro and Lewis strike a perfect balance between the complexity of statistical theory and the simplicity of applying statistics practically. Whether you wish to delve deeper into the enduring controversies in statistics, or simply wish to understand the difference between a t-test and Chi-square, you will find your answer in this book. Quantifying the User Experience is an invaluable resource for those who are conducting user research in industry."--
User Experience, Vol. 13, Issue 1, 1st Quarter
"Written in a conversational style for those who measure behavior and attitudes of people as they interact with technology interfaces, this guide walks readers through common questions and problems encountered when conducting, analyzing, and reporting on user research projects using statistics, such as problems related to estimates and confidence intervals, sample sizes, and standardized usability questionnaires. For readers with varied backgrounds in statistics, the book includes discussion of concepts as necessary and gives examples from real user res