Jeff Sauro • May 30, 2008

Use this calculator to generate both a one-sample confidence interval and to test against a critera or benchmark.Can You Change A Standardized Questionnaire?

Getting Started Finding the Right Sample Size

8 Ways to Show Design Changes Improved the User Experience

How common are usability problems?

5 Examples of Quantifying Qualitative Data

Confidence Interval Calculator for a Completion Rate

10 Things to Know about Usability Problems

Nine misconceptions about statistics and usability

What five users can tell you that 5000 cannot

How to Conduct a Usability test on a Mobile Device

97 Things to Know about Usability

Should you use 5 or 7 point scales?

Does better usability increase customer loyalty?

Why you only need to test with five users (explained)

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Customer Analytics for DummiesA guidebook for measuring the customer experience Buy on Amazon | |

Quantifying the User Experience: Practical Statistics for User ResearchThe most comprehensive statistical resource for UX Professionals Buy on Amazon | |

Excel & R Companion to Quantifying the User ExperienceDetailed Steps to Solve over 100 Examples and Exercises in the Excel Calculator and R Buy on Amazon | Download | |

A Practical Guide to the System Usability ScaleBackground, Benchmarks & Best Practices for the most popular usability questionnaire Buy on Amazon | Download | |

A Practical Guide to Measuring Usability72 Answers to the Most Common Questions about Quantifying the Usability of Websites and Software Buy on Amazon | Download |

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