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Comparing Distributions of Univariate Data

  • When comparing distributions of univariate data, graphs can be used to describe differences in center, spread, clusters in the data, gaps in the data, outliers, unusual features, and shape of the distribution.

  • Common graphs are stacked dotplots, stemplots, and boxplots.

Comparing Distributions of Univariate Data

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Comparing Features 0:07
    • Compare Center & Spread
    • Compare Clusters & Gaps
    • Compare Outliers and Unusual Features
    • Compare Shapes
    • Symmetric
    • Skewed Right
    • Skewed Left
    • Uniform
  • Example: Dotplots 1:56
  • Example: Back to Back Stemplots 5:16
  • Example: Parallel Boxplots 10:21
  • Example: Back to Back Stemplots 15:03
  • Extra Example 1
  • Extra Example 2