Usability in Information Visualization Recap Quiz

Play an AI-generated podcast conversation about this lesson

What is the primary focus of usability?

Learnability

Efficiency (correct)

Safety

User interface design

What does efficiency in usability refer to?

Speed of learning

Amount of information provided to the user

Time taken to use the system once learned (correct)

Error prevention

What is the purpose of UI Hall of Shame/Fame according to the text?

To provide information for user decision-making (correct)

To predict user efficiency

To improve user memory

To increase pointing efficiency

What is the capacity of working memory according to the text?

7 ± 2 'chunks' Signup and view all the answers

How does maintenance rehearsal affect working memory?

It prevents decay but costs attention Signup and view all the answers

What is the definition of 'chunking' as per the text?

A unit of memory or perception Signup and view all the answers

What is the key factor that allows chess masters to remember board configurations?

Their past experience of playing and studying games Signup and view all the answers

What does Fitt’s Law specify in relation to hand movement and target size?

As the target size goes up, movement time goes down Signup and view all the answers

What is the implication of Fitt’s Law with regards to targets at the screen edge?

Targets at the screen edge are easy to hit Signup and view all the answers

How is the index of difficulty calculated in Fitt’s Law?

Logarithmically in relation to target size and distance Signup and view all the answers

What is the key message when transforming Fitt’s Law into a designer’s language?

Design your user interface element to be large and close to where the user starts the interaction Signup and view all the answers

What makes steering tasks much harder than pointing according to the text?

The linear nature of index of difficulty Signup and view all the answers

What is suggested by transforming the law into designer’s language regarding tunnel user interface elements?

Design them to be wider and shorter Signup and view all the answers

What does a high index of difficulty indicate in Fitt’s Law?

A small target size and a long distance from the starting point Signup and view all the answers

What is the primary reason for beginners' limited ability to remember chess board configurations according to the text?

Their lack of experience in playing chess Signup and view all the answers

What is implied by Fitt’s Law with respect to the effect of target distance on movement time?

As the target distance increases, movement time increases Signup and view all the answers