| Edition |
2nd edition. |
| Description |
1 online resource |
|
text txt rdacontent |
|
computer c rdamedia |
|
online resource cr rdacarrier |
| Bibliography |
Includes bibliographical references and index. |
| Contents |
Cover ; Title Page; Copyright Page; Dedication; Contents; Biographies; Foreword; Preface to the Second Edition; Acknowledgments; Chapter 1 -- Introduction and how to use this book; Introduction; The organization of this book; How to use this book; What test should I use?; What sample size do I need?; You don't have to do the computations by hand; Key points; Chapter review questions; Answers to chapter review questions; References; Chapter 2 -- Quantifying user research; What is user research?; Data from user research; Usability testing; Sample sizes; Representativeness and randomness. |
|
Three types of studies for user researchData collection; Completion rates; Usability problems (UI problems); Task Time; Errors; Satisfaction ratings; Combined scores; A/B testing; Clicks, page views, and conversion rates; Survey data; Rating scales; Net Promoter Scores; Comments and open-ended data; Requirements gathering; Key points; References; Chapter 3 -- How precise are our estimates? Confidence intervals; Introduction; Confidence interval = twice the margin of error; Confidence intervals provide precision and location; Three components of a confidence interval; Confidence level. |
|
VariabilitySample size; Confidence interval for a completion rate; Confidence interval history; Wald interval: terribly inaccurate for small samples; Exact confidence interval; Adjusted-Wald: add two successes and two failures; Best point estimates for a completion rate; Guidelines on reporting the best completion rate estimate; How accurate are point estimates from small samples?; Confidence interval for a problem occurrence; Confidence interval for rating scales and other continuous data; Confidence interval for task-time data; Mean or median task time?; Variability; Bias; Geometric mean. |
|
Computing the geometric meanLog transforming confidence intervals for task-time data; Confidence interval for large sample task times; Confidence interval around a median; Key points; Chapter review questions; Answers to 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; Small sample test; Mid-probability; Large sample test; Comparing a satisfaction score to a benchmark; Do at least 75% agree? converting continuous ratings to discrete. |
|
Disadvantages to converting continuous ratings to discreteNet Promoter Score; Comparing a task time to a benchmark; Key points; Chapter review questions; Answers to chapter review questions; References; Chapter 5 -- Is there a statistical difference between designs?; Introduction; Comparing two means (rating scales and task times); Within-subjects comparison (paired t-test); Confidence interval around the difference; Practical significance; Comparing task times; Normality assumption of the paired t-test; Between-subjects comparison (two-sample t-test); Confidence interval around the difference. |
| Subject |
User interfaces (Computer systems) -- Testing -- Statistical methods.
|
|
Interfaces utilisateurs (Informatique) -- Essais -- Méthodes statistiques.
|
|
COMPUTERS -- Computer Literacy.
|
|
COMPUTERS -- Computer Science.
|
|
COMPUTERS -- Data Processing.
|
|
COMPUTERS -- Hardware -- General.
|
|
COMPUTERS -- Information Technology.
|
|
COMPUTERS -- Machine Theory.
|
|
COMPUTERS -- Reference.
|
| Added Author |
Lewis, James R., 1953- author.
|
| Other Form: |
Print version: Sauro, Jeff. Quantifying the user experience. [Place of publication not identified] : Morgan Kaufmann, 2016 0128023082 9780128023082 (OCoLC)940520619 |
| ISBN |
9780128025482 (electronic bk.) |
|
0128025484 (electronic bk.) |
|
0128023082 |
|
9780128023082 |
| Standard No. |
AU@ 000062548613 |
|
CHNEW 000885526 |
|
CHVBK 374442266 |
|
DEBBG BV043894950 |
|
DEBSZ 482472235 |
|
GBVCP 879417706 |
|
