cpsc344-2008W1-midterm-sample-soln

cpsc344-2008W1-midterm-sample-soln - Name Student ID Number...

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Name: Student ID Number: CPSC 344 2008-09 T1 1 of 16 Midterm Exam (90 minutes) Signature: CPSC 344 2008W1 Midterm Exam 90 minutes SOLUTIONS + comments Department of Computer Science University of British Columbia K. MacLean Exam Instructions (read carefully): 1. Sign this page in the space provided to indicate your agreement with these instructions. (You must sign to write the exam.) 2. Continue reading these instructions, but do not open the exam booklet until you are told to do so by a proctor. 3. Print your Name and Student ID at the top of each page of the exam before you start working. 4. Cheating is an academic offense. Your signature on the exam indicates that you understand and agree to the University’s policies regarding cheating on exams. 5. The exam is closed book . There are no aids permitted (this includes calculators). 6. Interpret the exam questions as written . When in doubt, take a strict, literal interpretation of the question. 7. You have 90 minutes in which to work (~1 min/mark). Budget your time wisely . 8. No one will be permitted to leave the exam room during the last ten minutes of the exam. Question Points Received 1 12 2 12 3 12 10 pts on distributed exam 4 16 5 8 6 22 Total 82 80 pts on distributed exam
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Name: Student ID Number: CPSC 344 2008-09 T1 2 of 16 Midterm Exam (90 minutes) Question #1 [12 points total]: True/False For each of the 6 statements below, indicate whether the statement is true or false by circling either True or False . Briefly explain your T/F response in one or two sentences, and illustrate with an example where appropriate. [2 pts each; 1 pt for T/F + 1 pt for explanation] explanation: full credit only for very good ones (a) Statement: In HCI, we refer to “human error” as a “myth” because in fact, people never make mistakes. True False Explain: False. People do make mistakes - all the time. The question is WHY – it’s often because the interface was not designed with their abilities and context in mind, and a better design could have avoided them. In extreme cases, the interface requires humans to do something that’s physically impossible for them. Calling it “human error” lays responsibility entirely on the user, when this may be unrealistic. (b) Statement: Contrary to how it may seem, the mental visual image we hold of a scene is constructed gradually, with attention determining what goes into the image. True False Explain: True. The “parallel” camera metaphor is an inaccurate, even though it seems right. Our focal point is always moving, update is selective and guided by attention. This is how we can visually miss so much. (must reference “how it seems” in explanation). (c) Statement: The secretary who processes all the expense reports filed by faculty and students in a department is an object of the task of expense report processing in that department.
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