USYD - INFO3315 - Mid term exam questions - 2013

 Last year assignment and tutorials was about FitBit. every students got one of this wireless FitBit device and every tutorial, assignment and quiz were around that. they might change it this year but it gives you overall view on how it looks like or what they assess in exam. i also wanted to put my assignment here but it's too long and I think you'll do better.
here's the questions:

Question 1(10 marks) 

(2 marks) What is one important affordance of the FitBit?

(2 marks) For your project this semester, you aim to create an interface that enables people to exploit their FitBit data so they can observe changes in their inactivity over time. Explain how the affordance of the FitBit are useful for this?

(2 marks) Suppose we had the perfect sensor for the project goal, state one key affordance would it have that the FitBit does not have.

(2 marks) Explain how  think aloud evaluation has the potential to give insight into the user's mental model?

Question 2(10 marks) 

(6 marks) For the project this semester, a friend drafted the following single sentence statement to describe the goal of their interface:

• A sedentary worker ill be able to determine the average number of minutes per work-day that they were inactive during work-hours over the last full calendar month.

 There is missing key elements of the single sentence statement. What are the missing elements?

To help your friend understand how to improve their single sentence statement, amend the following copy, writing on an example of each missing part.

•  A sedentary worker will be able to determine the average number of minutes per work-day that they were inactive during work-hours over the last full calendar month.

(2 marks) In the week 4 lab you saw the following question based on a standard questionnaire:

• During the last 7 days, how much time in total did this user usually spend sitting on a week day?      ---------------hours ---------------- minutes

In light of your lecture on design of questionnaire, what is a serious weakness of this question?

(2 marks) The week 5 reading, Lewis et al(2013) UMUX-LITE when there's no time for SUS, provided evidence of the value of just 2 usability questions, rather than the full SUS. what is the main reason to use SUS, even though it takes the user longer to answer?

Question 3(10 marks) 

In the week 4 lb you studied the screen shot below, from the FitBit interface. It shows activity of a hypothetical user called Alex. The user has their mouse over the bar for the time 11.15 - 11.30am. If the user moves their mouse away from the bars, the bubble disappears.



Suppose you are designing the tasks for a think aloud usability evaluation, to access whether users can make effective use of this interface to access their level of activity. 

(4 marks) State one important weakness in the following task:

• Use your mouse to hover over the tallest bar in the chart to see how many steps this user took at that particular time?

(2 marks) Write a better version of the question that avoids this weakness.

(2 marks)  State what Fitts' Law predicts about the effect of the size of the click-target where the target is 5 centimetres  from the current position of the mouse cursor.
  
(2 marks) In a desktop GMOS analysis, P ranges from 0.8 to 1.5, according to Fitts' Law. Is this directly applicable to a tabletop touch interface?
    Yes/ No
Justify your answer in terms of the relationship between Fitts' Law and the way it relates to the value of P in a GOMS analysis.

Question 4 (10 marks)

In the space below, draw a concept map. it should answer the question:

• What are the characteristics of Think-Aloud usability evaluation?

Use only the concepts and links listed below.(They are in alphabetic order)
Use just 7 of the most important concepts to create just 6 of the most important propositions.

Concept list
efficiency
expert-users
learnability
memorability
monitoring
no-user method
novice-users
qualitative-method
quantitative-method
satisfaction
think-aloud
user method
user-errors

Link names:
evaluates
is-a(n)
is-important-for
is-suited-to

p.s: course website INFO3315 ... they changed it a lot
       please don't ask for answer. I even didn't have the questions