ML Wiki

Univariate Analysis

Analysis (mostly exploratory) of one variable

• order of magnitude of this variable
• are there missing values?
• Outliers and extreme values?

In order to analyze one variable

• Calculate Summary Statistics
• Also can calculate Mean and Standard Deviation
• Use Histograms to learn about data Distribution

Results can be used for

• deciding how to discretize this variable
• Handling Missing Values
• Noise Handling (Data Mining)

Visualization

Plots that can be useful:

• Bar Charts
• Box Plots for visualizing Summary Statistics
• Histograms and Density Plots

Sources

• Data Mining (UFRT)
• http://en.wikipedia.org/wiki/Univariate_analysis