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

Usability Testing & Analysis

We offer assistance for all stages of usability testing
  • Planning
  • Testing
  • Analysis

Persona/User Definitions

Typical Cost: $3,500-$5,500

Typical Duration: 2-3 Weeks


  • Define User Profiles for Task Definition and Testing
  • Interview 3-5 users
  • Assimilate internal data and existing research (e.g. from Marketing)
  • Define User Goals
  • Demographics
  • Product Usage
  • Additional factors suggested by client

Heuristic Walkthrough/Interface Inspection

Typical Cost: $5,000-$10,000

Typical Duration: 2-3 Weeks

  • Define the users, their level of experience and goals with the product
  • Define a set of tasks to evaluate
  • Report with Prioritized problems potential design solutions based on tasks
  • Where possible, having additional evaluators increases the reliability of the results

Formative Usability Evaluation

Typical Cost: $15,000-$20,000

Typical Duration: 4-6 Weeks

  • Work with product team to define objectives, users, task-scenarios and metrics
  • Sample size calculations and Recommendations
  • Collect design insights, usability problems with severity ratings and design recommendations
  • Collect (where appropriate) Task Completion Rates, Net Promoter Scores, Task-Times, Task/Test Satisfaction, Errors
  • Top-Line summary report
  • Report full results in PPT
  • Full presentation to client

Benchmark and Comparative Usability Evaluation

Typical Cost: $20,000-$40,000

Typical Duration: 5-8 Weeks

  • Work with product team to define objectives, users, task-scenarios and metrics
  • Sample size calculations and Recommendations
  • Create testing environment on UserZoom or custom environment
  • Collect (where appropriate) Task Completion Rates, Net Promoter Scores, Task-Times, Task/Test Satisfaction, Errors
  • Recorded or moderated testing between 10 and 30 users
  • OR
  • Unmoderated testing between 10 and 1,000 users
  • Soft-Launch: Pre-test on a subset of users, refine test as needed
  • Hard-Launch: Launch to full set of respondents
  • Top Line Results
  • Detailed Analysis

Typical Engagement Price

$3,500 to $40,000

Selected Clients

GE Capital, Sage Software, PayPal, Kontron, Benten Technologies, Gallaudet University

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Usertesting.com

Userzoom: Unmoderated Usability Testing, Tools and Analysis

Loop11 Online Usabilty Testing

Use Card Sorting to improve your IA

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.
More about Jeff...

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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

Buy on Amazon

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

Buy on Amazon | Download

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

Buy on Amazon | Download

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

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