Data Visualization

Yiwen Zhang
Jun 5 2015

Data Analysis Process

  1. Obtain the data
  2. Explore
  3. Research and build the model
  4. Present and report

Data Exploration --- Plots Matter!

Example: Anscombe’s Quartet

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Data Exploration --- Plots Matter!

  • Same mean of x
  • Same mean of y
  • Same variance x
  • Same variance y
  • Same correlation between x and y
  • Same linear regression coefficients: y = 3.0 + 0.5 x

Data Exploration --- Plots Matter!

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Illustrate Complex

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Illustrate Complex

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Illustrate Complex

Example 1: Where to donate?

– Make it better

Example 2: Where to live?

– Make it better

Example 3: Where to find talents?

– Make it better

Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

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Mortgage Data

Interactive Plots