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:
© 2012
Published:
Imprint:
Morgan Kaufmann
Print ISBN:
9780123849687
Electronic ISBN:
9780123849694