Data Exploratory - Univariate Analysis

  • explore variables one by one

    • Continuous Variables
      • central tendency
      • spread of the variable (Dispersion 分散)
    • Categorical Variables
      • frequency table
    • also used to highlight
      • missing values
      • outlier values
Continuous Variables Categorical Variables
Distribution central tendency mean frequency table percentage
median metrics 指標 Count
mode Count %
min
max
Dispersion 分散 Range
Quartile
IQR
Variance
Standard Deviation
Skewness
Kurtosis
Visualization Histogram Bar chart
Box plot
  • Continuous Variables
    • central tendency
      • mean
      • mdian
      • mode
      • min
      • max
    • spread of the variable (Measure of Dispersion 分散)
      • Range
      • Quartile
      • IQR
      • Variance
      • Standard Deviation
      • Skewness
      • Kurtosis
    • Visualization Methods
      • Histogram
      • Box plot
  • Categorical Variables
    • frequency table : distribution of each category
      • read as percentage of values under each category
    • measured using two metrics
      • Count
      • Count %
    • Visualization
      • Bar chart
  • Continuous Variables

Reference:

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