HCI - Overview

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1. Which of these fully describes Ordinal data?

  • - Ordering or ranking e.g. user preference
    - No set distance between values
    - Can compare less or greater than but not the mean
  • - Has Equal distance and an absolute 0
    - Can calculate mean, range, variance, standard deviation
  • - Data that can be split into categories
    - No comparisons (no category is deemed better than another)
  • - Equal distance between adjacent values (but no absolute 0)
    - Can calculate means
    - Can't calculate ratios
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2. Which of these describes only Analytical Research?

  • Research that involves running controlled experiments to determine significance of variables on human performance
  • Research Based on, concerned with, or verifiable by observation or experience rather than by theory or pure logic
  • Research based on historical data that is already stored rather than via observation.
  • Research explaining observations with detailed descriptions that can't be represented with numbers and stats

3. "Finding a relationship between two uncontrolled variables (either impossible or unethical to control)" is a description of which Research Method:

  • Correlation
  • Experimental
  • Observational

4. Which of these is true about Interval data?

  • Can calculate range, variance, standard deviation
  • Equal distance between adjacent values but no absolute 0
  • Has Equal distance between adjacent values and an absolute 0

5. Which came first?

  • As we may think/memex - Bush
  • Sketchpad - Ivan Sutherland
  • The mouse - Doug Engelbart
  • Xerox star - Xerox
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