Descriptive Analytics I: Nature of Data, Statistical Modeling, and Visualisation - Data Visualization

5 important questions on Descriptive Analytics I: Nature of Data, Statistical Modeling, and Visualisation - Data Visualization

What is data visualization? Why is it needed?

data visualization= information vizualisation: "The use of visual representation to explore, make sense of and communicate data". what is portayed is information, not data.
Information is the aggregation, summerization and contextualization of data (raw facts).


What are the historical roots of data visualization?

Dates back to 2nd century AD.
William Playfair 1801: inventor of modern chart: line and bar charts.

Carefully analyze Charles Joseph Minard's graphical portrayal of Napoleon's march. Identify and comment on all the information dimensions captured in this ancient diagram.

Multidimensional:
  • Size of the army
  • Direction of movement
  • Geographic locations
  • Temperature
  • Time scales
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Who is Edward Tufte? Why do you think we should know about his work?

cfr Wikipedia: is an American statistician and professor emeritus of political science, statistics, and computer science at Yale University. He is noted for his writings on information design and as a pioneer in the field of data visualization.
Visualization books, and early visualizations chronicled on his websit: edwardtufte.com

What do you think is the next big thing in data visualization?

  • 3-dimensional visualization
  • virtual reality
  • holographic visualization 

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