Parts of the SUM: A Case Study of Usability Benchmarking Using the SUM Metric

Erin Bradner, Melissa Dawe

User Experience Professionals' Association International Conference


We present real-world lessons learned conducting a usability benchmark on a large, complex software application using the standardized, summated usability metric (SUM). We discuss nuances to the SUM equation and provide insight on key decisions including selecting tasks, setting target metric values, and translating z-scores into percentages when communicating results.

Related Publications


Welcome ${RESELLERNAME} Customers

Please opt-in to receive reseller support

I agree that Autodesk may share my name and email address with ${RESELLERNAME} so that ${RESELLERNAME} may provide installation support and send me marketing communications.  I understand that the Reseller will be the party responsible for how this data will be used and managed.

Email is required Entered email is invalid.