Measuring Usability
Quantitative Usability, Statistics & Six Sigma by Jeff Sauro

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Sampling Topics

7 S

7 S's of User Research Sampling

Jeff Sauro • March 13, 2012

Rarely can we talk to all users in the population we're studying, instead we sample. Here are 7 S's to help in your sampling: Simple Random, Starbucks, Stratified, Snowball, Spot, Sequential and Serial sampling.[Read More]

Do you need a random sample for your usability test?

Do you need a random sample for your usability test?

Jeff Sauro • May 12, 2010

You don't need a random sample to use statistics to make better decisions from your usability data. You do need to know if the users who aren't in your usability tests are different enough than those who are.[Read More]

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About Jeff Sauro

Jeff Sauro is the founding principal of Measuring Usability LLC, a company providing statistics and usability consulting to Fortune 1000 companies.
He is the author of over 20 journal articles and 4 books on statistics and the user-experience.
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Jeff's Books

Quantifying the User Experience: Practical Statistics for User ResearchQuantifying the User Experience: Practical Statistics for User Research

The most comprehensive statistical resource for UX Professionals

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Excel & R Companion to Quantifying the User ExperienceExcel & R Companion to Quantifying the User Experience

Detailed Steps to Solve over 100 Examples and Exercises in the Excel Calculator and R

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A Practical Guide to the System Usability ScaleA Practical Guide to the System Usability Scale

Background, Benchmarks & Best Practices for the most popular usability questionnaire

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A Practical Guide to Measuring UsabilityA Practical Guide to Measuring Usability

72 Answers to the Most Common Questions about Quantifying the Usability of Websites and Software

Buy on Amazon | Download