Systems week 3

Question 1

Usability

Answer 1

-How easily can users achieve?
-Focus on effectiveness, efficiency, satifaction
-Make interfaces intuitive, reduce user effort

Question 2

What is UX

Answer 2

-Overall feelings, perceptions, satisfaction with a product
-Usability plus emotional factors:enjoyment, trust, aesthetics
-Good UX:not just usable, but meaningful and engaging

Question 3

Principle 1

Answer 3

Know your user
-Identify audience’s skills,background, needs
-Understand user goals and context
-Tailor interface to real users, not assumptions

Question 4

Principle 2

Answer 4

Understand the task
-Design matches natural user tasks and flows
-Break user goals into clear steps
-Align workflow with mental models

Question 5

Principle 3

Answer 5

Reduce memory load
-Minimize what users must remember
-Prefer recognition
-Limit options

Question 6

Principle 4

Answer 6

Strive for consistency
-Use uniform design patterns,terms
-Similar actions=similar visuals
-Follow platform conventions

Question 7

Principle 5

Answer 7

Remind users(visbility and feedback)
-Keep users informed
-Gentle reminders for important info
-Tool/tips help for easy guidance

Question 8

Principle 6

Answer 8

Prevent errors and allow recovery
-Prevent common errors(constrain, disable invalid)
-Confirm destructive actions, provide “Undo”
-Clear error messages,easy recovery steps

Question 9

Principle 7

Answer 9

Naturalness
-Use familiar metaphors and mappings
-Make interaction intuitive
-Obvious affordances

Question 10

What makes a good UI?

Answer 10

-Simplicity
-Clarity
-Familiarity

Question 11

Visual layout basics

Answer 11

-Alignment
-Grouping
-Whitespace

Question 12

Consistency and standards

Answer 12

-Consistent styles
-Use platform UI standards
-Use same terminology everywhere to avoid confusion

Question 13

Effective labeling

Answer 13

-Use friendly language on labels/buttons
-Short but descriptive, users know to input
-Provide instructions or placeholders where helpful
-Avoid technical jargon

Question 14

Choosing the right controls

Answer 14

-Pick controls that match the input
-Avoid free text if input can be constrained
-Buttons:Label with clear action
-Controls should afford usage

Question 15

Basic usability checks

Answer 15

-Is everything visible and legible?
-Logical flow
-Controls work as expected?
-No typos or inconsistent terms

Question 16

Why evaluate usability?

Answer 16

-We often think our UI is easy, but only testing shows if users agree
-Early usability testing catches problmes before launch
-Leads to higher quality, more efficient, and satisfying user experiences
-Better usability means happier users

Question 17

Usability goals and criteria

Answer 17

Effectiveness
Efficiency
Satisfaction
Learnability
Error rate

Question 18

Common usability issues

Answer 18

-Navigation problems
-Label confusion
-Lack of feedback
-Inconsistent UI
-Error handling gaps

Question 19

Heuristic evaluation

Answer 19

-Experts review the UI against best-practice
-Systematic inspection using heuristics
-Fast and low cost, no end-users required
-Check for:consistency,visibility of status, error prevention

Question 20

Key usability heuristics

Answer 20

-Consistency and standards
-Visibility of system status
-Error prevention and recovery
-Recognition over recall
-Aesthetic and minimalist design

Question 21

Heuristics

Answer 21

Practical checklist for finding issues quickly

Question 22

User testing sessions

Answer 22

Plan sessions
Get real users
Observe
Collect metrics
Encourage “think aloud”

Question 23

Gather user feedback

Answer 23

-After testing, interview users:what was frustrating
-Use quick surveys
-Watch for repeated feedback
Ask for suggestions

Question 24

Incorporating feedback(iterative design)

Answer 24

-Analyze issues
-Prioritize fixes
-Brainstorm/redesign
-Implement and iterate