User Experience Design Quality Control & Assurance 3

Question 1

Which metric BEST captures how efficiently users can complete a task during usability testing?

Accepted Answer

Task time on completion (time-on-task)

Answer

Time-on-task directly measures efficiency by recording how long successful users take to complete a defined task.

Question 2

A UX auditor identifies that the same action is labeled 'Delete' in one area and 'Remove' in another. Which quality issue does this represent?

Accepted Answer

Inconsistent terminology violating consistency and standards

Answer

Using different labels for the same action violates the consistency and standards heuristic, forcing users to wonder if the two terms mean the same thing.

Question 3

In a UX quality framework, what does 'error rate' measure?

Accepted Answer

The proportion of user actions that result in mistakes or incorrect steps during task completion

Answer

Error rate in UX testing measures how often users make incorrect actions (wrong clicks, form mistakes) while trying to complete a task.

Question 4

What is the recommended minimum number of participants for a moderated usability test aimed at finding the most critical usability problems?

Accepted Answer

5

Answer

Nielsen's research shows that 5 participants uncover approximately 85% of usability problems, making it the widely accepted minimum for cost-effective qualitative testing.

Question 5

A QA checklist item states: 'Every form field must have a visible label that is not removed on focus.' Which standard does this rule primarily support?

Accepted Answer

WCAG Success Criterion 1.3.1 (Info and Relationships) and 3.3.2 (Labels or Instructions)

Answer

WCAG 1.3.1 and 3.3.2 require that form inputs have programmatic labels and clear instructions so assistive technologies and users can understand what is required.

User Experience Design Practice Test

User Experience Design Practice Test

User Experience Design Quality Control & Assurance 3