Pareto Plots

Pareto plots combine a bar plot and a line plot, and are used to quickly identify which metrics are most indicative of a quality control problem. Each bar in the plot represents a metric (see metric code below). Metric bars are ordered by decreasing incidence of outliers, where outliers are defined as the number of instances where each metric falls outside of the +/- 3 standard deviation range. The line shows the cumulative outliers by percentage.

There are separate pareto plots for each guide set and plot type (Levey-Jennings, Moving Range, CUSUMm, and CUSUMv) combination.

Other items to note in Pareto plots:

  • Hover over dots in the line plot to show the cumulative %.
  • Hover over a metric bar to show the number of outliers.
  • Click a metric bar to see the relevant QC plot and guide set for that metric.
  • Click on the PNG or PDF button (hover to reveal buttons in the upper left) to export the Pareto plot for that guide set.
Metric codes:
  • FWB - Fill Width at Base
  • FWHM - Fill Width at Half Maximum
  • MA - Mass Accuracy
  • PA - Peak Area
  • P Area - Precursor Area
  • RT - Retention Time
  • T Area - Transition Area
  • T/PA Ratio - Transition/Precursor Area Ratio

Related Topics


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