View Pareto Chart

This section introduces how to view and use the Pareto chart analysis feature.

Pareto

A Pareto chart is a statistical analysis chart that combines bar and line charts to show the importance of various problems or factors to the overall impact. The bars, arranged in descending order, represent the frequencies or values of each class. The line graph shows the cumulative percentage. A Pareto chart is commonly used to identify and prioritize the most significant problems (“the 80/20 rule”), helping users focus on the few key factors that have the greatest impact.

Before viewing the Pareto chart, please complete the following actions:

  1. In the upper ribbon, select Analysis and Compensation  Historical Data.

  2. In the Data filtering tab, complete data filtering and select measurement records. For details, refer to Filter and View Historical Data.

  3. Click the Pareto chart tab at the top of the page.

    pareto chart

Chart Settings

The upper right corner of the page provides the following settings:

  • Analysis dimensions: Select the dimension for analysis and select Control item or Feature.

    • When Control item is selected, the Pareto chart will display the defect data by the dimension of the control item.

    • When Feature is selected, an additional QC mode option will be displayed.

  • QC mode (displayed only when Feature is selected in the analysis dimensions): Select the quality inspection mode, either Partial inspection or Full inspection.

Chart Content

A Pareto chart displays the following information:

  • Blue bar chart (left: Defect count): Sort the defects in descending order of the number of defects to visualize the number of defects.

  • Yellow line (right: Cumulative percentage): Displays the cumulative percentage of the number of defects of each non-compliant item, which is used to identify the major defect items.

  • Red vertical line: marks the dividing line where the cumulative percentage reaches a certain threshold, dividing the undesirable items into major and minor factors.

The bottom of the chart displays the detailed data of each undesirable item:

  • Name: The name of the undesirable item (such as measurement point A1, measurement point A4, etc.).

  • Cumulative percentage: The cumulative percentage of the number of defects of this defect item and all preceding items relative to the total number of defects.

  • Defect count: The number of defects of this defect item.

Export

Click Export in the upper right corner of the page to export Pareto chart data.

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