TU Wien:Cognitive Foundations of Visualization VO (Weiss)/Exam 2024-06-27

Group A questions:

Multiple choice. Not mentioned in TISS/TUWEL/exam sheet, only said during the exam: to get points we have to select all correct options, but there are no negative points if we get a question wrong. Some were just true/false, some had multiple options.

1. . Applied perception for visualization is about
   1. a. Using visulization to understand human vision
   2. b. Generating theories about how human vision works
   3. c. Using vision science to guide visualization design
2. Use of visual queries paradigm to verify how easy/hard it is to find an answer is not important for designing effective visualization.
   1. a. TRUE
   2. b. FALSE
3. Where in the eye is the retina located?
   1. a. in the front of the eye
   2. b. around the whole eye
   3. c. in the back of the eye
4. Which of the following statements is/are true?
   1. a. Only a small portion of information entering the eyes is retained in memory.
   2. b. Human vision permits to have an accurate and complete representation of the world.
5. Which of the following is the meaning of the statement "The world is its own memory"?
   1. a. Computers can store information about the real world.
   2. b. We always have information in our brain storing information about theworld that surrounds us.
   3. c. Information contained in the world surrounding us can be used to access information on demand when need to accomplish a task.
6. "Position" is a better visual channel than "length" to convey quantitative information.
   1. a. TRUE
   2. b. FALSE
7. Discriminability depends on:
   1. a. Channel properties
   2. b. Size
   3. c. Type of device used
   4. d. Interactivity
8. In observing visualizations, focused attention interacts With salience.
   1. a. TRUE
   2. b. FALSE
9. Which of the following are valid ways to represent objects as a group?
   1. a. Similarity
   2. b. Variance
   3. c. Proximity
   4. d. Connection
   5. e. Enclosure
10. Which of the following graphs has visual channels With higher separability? (2 Visualitzations given)
    1. a. The heatmap
    2. b. The scatte plot
11. Which of the following visualizations is most effective in estimating the length of A compared to B? (Different bar plots given)
    1. choose from type 1-5
12. Effective categorical color scales should have uniformly distributed color hues with perceptually constant chroma and luminance values.
    1. a. TRUE
    2. b. FALSE
13. Which of the following is an effective strategy to deal With the problem of having too many categories to represent With color?
    1. a. It is not a problem as long as the same color is never used twice.
    2. b. Reduce the number of categories to visualize by aggregating and/or filtering them.
    3. c. Reuse the same color for multiple categories.
14. Luminance is the second most powerful channel to create contrast between objects in a visualization.
    1. a. TRUE
    2. b. FALSE
15. Diverging color scales are designed by joining two independent color scales With the same hue and a different luminance gradient.
    1. a. TRUE
    2. b. FALSE
16. An ecologist wants to create a map showing different types of land cover (such as forests, grasslands, urban areas, and water bodies) across a large region. Each type of land cover needs to be distinctly identified on the map.Which of the following color maps is appropriate for this task?
    1. a. Sequentialb.
    2. b. Diverging
    3. c. Categorical/quantitative
17. Which of the following statements is true?
    1. a. Encoding quantitative data With color can help detect patterns in spatial visualizations.
    2. b. Color can only be used to encode quantitative data.
18. The CIE lab/luv color space is designed to be perceptually uniform,
    1. a. TRUE
    2. b. FALSE
19. Which of the following color spaces are perceptually linear?
    1. a.HSL
    2. b. HSV
    3. c. RBG
    4. d. CIE Lab/Luv
    5. e.HCL
20. HCL color space is considered easy and intuitive to use.
    1. a. TRUE
    2. b. FALSE

Open text questions about the visualization we brought / they provided

• compare and contrast holistic and separate reading approaches in your chosen visualization. Give examples for your chosen visualization.
• Evaluate the effectiveness of color usage and suggest improvements in your chosen visualization.