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

Products

Airline & Aggregator Website Net Promoter and Usability Benchmarks

Airline & Aggregator Website Net Promoter and Usability Benchmarks

A benchmark report with usability, trust and appearance scores from the SUPR-Q, Net Promoter Scores, and insights from 1,023 users across 9 us based airline and aggregator websites (data collected in May 2014).[Read More]

Usability & Net Promoter Benchmark Report for Retail Websites

Usability & Net Promoter Benchmark Report for Retail Websites

A benchmark report with usability, trust and appearance scores from the SUPR-Q, Net Promoter Scores, and insights from 800 users across 10 popular retail websites collected in Q4 2013.[Read More]

Usability Timeline Infographic

Usability Timeline Infographic

An detailed high resolution infographic on the history of usability. It measures 52 inches long by 11.5 inches high.[Read More]

UX Methods Infographic

UX Methods Infographic

An 11x17 two-sided infographic on what UX methods to use and when to use them.[Read More]

Practical Statistics for User Research 1: Tutorial

Practical Statistics for User Research 1: Tutorial

A 2.5 hour tutorial covering two core skills in user research: confidence intervals and comparing means and proportions (e.g. A/B testing). The tutorial reviews the fundamentals of the normal curve and measurement and covers most of the first five chapters of the book Quantifying the User Experience.[Read More]

MOD 1000

MOD 1000

The MOD 1000 Mobile Observation Device is a lightweight rig for recording mobile screens and interactions for usability tests. The macro focused camera is mounted on a lightweight aluminum plate with a grip-tight surface. The image of the user's phone stays still while the user moves and manipulates their device instead of being confined to laying it flat on a desk. [Read More]

Excel and R Companion Book to Quantifying the UX

Excel and R Companion Book to Quantifying the UX

The companion book to Quantifying the User Experience. The book provides step-by-step screen shots on how to solve the most common statistical problems in User Research using 100 examples. Details are shown for both the Excel calculator and the R statistics package.[Read More]

SUPR-Q Full License

SUPR-Q Full License

The SUPR-Q is a 13 item questionnaire for measuring Usability, Credibility/Trust, Loyalty and Appearance of websites. Download a spreadsheet to generate a percentile ranking to see where a website compares to a database of 200 other websites. Full license also provides access to 100 website scores.[Read More]

SUPR-Q Limited License

SUPR-Q Limited License

The SUPR-Q is a 13 item questionnaire for measuring Usability, Credibility/Trust, Loyalty and Appearance of websites. Download a spreadsheet to generate a percentile ranking to see where a website compares to a database of 200 other websites. [Read More]

Net Promoter & Usability Benchmark Report for Consumer Software

Net Promoter & Usability Benchmark Report for Consumer Software

A comprehensive benchmark report with Net Promoter Scores, Usability Scores, Key Drivers and Analysis for 17 consumer and productivity software products from over 1700 current customers.[Read More]

SUS Guide & Calculator Package

SUS Guide & Calculator Package

This package contains both the SUS Calculator and 150 page Practical Guide to SUS. It contains many examples, graphs, tables, benchmarks and best practices for using SUS. The calculator helps prevent improper coding, compares two SUS Scores statistically, handles missing values, computes sample sizes, converts SUS scores to percentile ranks and letter grades and checks the internal reliability of the responses. [Read More]

Survey Sample Size Package

Survey Sample Size Package

A 27 page how-to-guide and Excel calculator that computes sample sizes for rating scales and binary response items. This package allows you to easily answer the common question: What sample size do I need for my survey? It includes plenty of examples and tips for computing the right sample size based on the question type and response analysis for Binary Responses, Rating Scales and Net Promoter Scores.[Read More]

Quantitative Starter Package for Usability Testing

Quantitative Starter Package for Usability Testing

A package of the popular How to Conduct a Quantitative Usability Test Report and four of the most commonly used excel calculators for getting started measuring and reporting usability with confidence.[Read More]

A Practical Guide to Measuring Usability

A Practical Guide to Measuring Usability

Do you know how to measure usability? Do you have questions about the benefits and process for conducting a quantitative usability test? I've assembled answers to the 72 most common questions that arise from measuring usability. In this 64 page report I provide concrete examples and plenty of data from a dataset of 120 usability tests, the latest usability research and my decade of experience conducting quantitative usability tests.[Read More]

Problem Frequency Calculator

Problem Frequency Calculator

Estimate how many users will experience a problem you see in a small sample usability test by entering the number who encountered the problem and your sample size. Also estimate the probability you can detect problems given your sample size.[Read More]

Average Task Time Calculator

Average Task Time Calculator

An excel calculator for task times that provides an easy way to compute the geometric mean, confidence intervals and a 1-sample t-test to compare a sample against a benchmark.[Read More]

Usability Statistics Package Expanded

Usability Statistics Package Expanded

Calculate the common statistical tests, sample sizes and use some advanced statistical tests on usability data. This calculator package contains everything the Usability Statistics Package contains, but is expanded to included sample sizes calculators for margins of error and power calculations for comparing two applications. It also contains ANOVA and Chi-Square tests to compare multiple means or completion rates. This package takes the guess work out of what tests to perform on your usability data.[Read More]

Confidence Interval Comparison Calculator

Confidence Interval Comparison Calculator

Compare the four different binomial confidence calculations: Adjusted-Wald, Wald, Exact and Score in an Excel spreadsheet. This calculator contains all the formulas for you to easily compare the methods and integrate them into your Excel workbooks.[Read More]

zScore Calculator

zScore Calculator

An excel calculator that provides an easy way to find the area under the normal curve from a z-score or lookup a z-score from area (inverse look-up).[Read More]

Crash Course in Z-Scores

Crash Course in Z-Scores

A complete and concise 51 page tutorial on how to compute, interpret and use of one of the most important concepts in statistics: z-scores. This crash course includes dozens of pictures, review questions and two full z-score look-up tables.[Read More]

zScore Package

zScore Package

This package contains both the popular 51 page Crash Course in zScores tutorial and the best-selling zScore Excel calculator at a discounted price.[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

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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