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Data Visualisation with Tableau
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What is Data Visualisation?
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What is Data Visualisation?

• Data visualization is visual representation or
  creation and study of the visually represented
  data
• Communicate information clearly and efficiently
  using Graphs, Plots, Statistical graphics etc.
• Numerical data may be encoded using dots, lines,
  or bars to visually communicate a quantitative
  message
• It makes complex data more accessible,
  understandable

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Have we experienced visualised data earlier?
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John_Snow_cholera
Data Visualisation
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What is Data? How is it generated?
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Importance of Visualizing Data

• Visualizations casts data into a format that can
  be easily grasped and understood
• much more quickly and easily than the raw number
  alone.
• Visualization is that it allows us access to huge
  amounts of data in ways that would not be
  otherwise possible.
• Visualizations allows to access more actionable
  insights.
• Visualizations allows data to be presented both
  graphically and interactively.
• Visualizations are effective at conveying
  knowledge.

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