WorksheetsUnit 4: Usability Evaluation
Total questions: 13
Worksheet time: 7mins
What is evaluation in HCI primarily used for?
Coding
Aesthetic improvement
Assessing usability and user experience
Writing documentation
What is usability in HCI?
App speed
How good a UI looks
Ease, efficiency, and satisfaction in user interaction
Server uptime
Which method involves observing real users completing tasks?
A/B marketing
Predictive modeling
Web scraping
Usability testing
Which usability principle relates to reducing errors and helping users recover?
Aesthetics only
User memory load
Error prevention and recovery
Server speed
What is one drawback of heuristic evaluation?
Requires too many users
No feedback at all
Can miss real user problems and generate false alarms
Does not need experts
Which cognitive metric indicates how mentally demanding a task is?
Reaction time
Mental effort
Satisfaction score
Server memory
Formative evaluation is conducted:
After product release
During design and development
Only in laboratory conditions
Only with expert evaluators
The DECIDE framework is mainly used for:
Programming guidelines
Evaluation planning
Data visualization
Code debugging
Empirical methods of evaluation rely on:
User studies and experiments
Mathematical proofs
Model-based reasoning only
Algorithmic analysis
A field study is different from a lab study because:
It is conducted in controlled conditions
It is conducted in the natural environment
It requires expert evaluators only
It is faster and cheaper
A cognitive walkthrough focuses on:
User’s problem-solving process
System’s memory efficiency
Graphical layout of UI
Coding style
Multi-modal interaction refers to:
Using only graphical interfaces
Interaction using multiple input/output modes
Interaction only via keyboard and mouse
Switching between operating systems
Which of the following is a practical measure of usability?
Number of keystrokes
Task completion time
CPU utilization
Lines of code
