Parallel-Axes Dot Plots

Parallel-Axes Dot Plot of Unpaired Samples

  • This graph type is designed to display a parallel-axes dot plot from k >=2 unpaired samples.
  • The probability significance test (p value) provided with the plot is based on between-subjects ANOVA.
Example Graph

Parallel-Axes Dot Plot of Measurements From Five Sites on Three Wafers*

Parallel-Axes Dot Plot of Unpaired Samples

* Source of Data: Engineering Statistics Handbook. Process and Product Monitoring and Control. http://www.itl.nist.gov:

  • A case study of a lithography process that included measurements from five sites on each wafer, three wafers in a cassette (of equal sample size) and thirty cassettes of wafers. The quality characteristic of interest is the width of a line ("Raw Line Width").