Practical Guide to Measuring Usability : 72 Answers to the Most Common Questions About Quantifying the Usability of Websites and Software, Paperback by Sauro, Jeff, ISBN 1453806563, ISBN-13 9781453806562, Brand New, Free shipping in the US

A detailed and readable guide that answers the most common questions that arise when measuring the usability of websites, software or cellphones. What measures do you take? What do have users do? What questionnaires do you use? What about sample size and statistical analysis?