
Compare category counts
Compare A 40, B 30, C 20 and D 10, with cumulative shares of 40%, 70%, 90% and 100%.
Explore this exampleFree Pareto Chart Maker
A Pareto chart orders categories by value and adds a cumulative percentage line.
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Free Pareto Chart Maker— templates & examples
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A Pareto chart orders categories by value and adds a cumulative percentage line.
Use the Pareto chart maker to compare nonnegative counts or amounts across categories. DataChart merges repeated category labels, sorts totals from largest to smallest and calculates the cumulative share. A percentage axis and a threshold line help you find the categories that account for most of the total. Start with the example or provide a table, then refine the chart in DataChart and export it for a report, quality review or presentation.

The pareto chart maker combines these steps in one workflow.
Rows with the same category are summed before sorting, so recurring labels contribute to one bar.
The line starts at the share of the largest category and reaches 100% at the final category.
An 80% reference helps you find the smallest leading group reaching that share; the sample need not obey an 80/20 split.
Use the chart workflow to supply a table, adjust the appearance, save the project and export the result.
Start with the pareto chart maker example, replace its input and inspect the result before export.
Rows with the same category are summed before sorting, so recurring labels contribute to one bar.
The line starts at the share of the largest category and reaches 100% at the final category.
An 80% reference helps you find the smallest leading group reaching that share; the sample need not obey an 80/20 split.
Use the chart workflow to supply a table, adjust the appearance, save the project and export the result.
Choose an example and adapt it to your task.

Compare A 40, B 30, C 20 and D 10, with cumulative shares of 40%, 70%, 90% and 100%.
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Combine the two A rows, 20 + 20 = 40, before sorting the category totals.
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Compare downtime values for calibration 12, cleaning 8, software 5 and power 3.
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Compare defect counts for label 18, seal 12, surface 7 and other 3.
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Compare four categories of 10; cumulative shares rise evenly through 25%, 50%, 75% and 100%.
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Export the chart alongside the input table so readers can see how categories were grouped and ordered.
Explore this exampleOur failed-run log contained repeated labels that made the largest causes hard to see. I used the Pareto chart maker with the recorded counts and reviewed how matching categories were combined. The ordered bars and cumulative line gave our quality meeting a clear starting point for choosing which problems to investigate first.
Marta Silva
Laboratory quality coordinator, University of Porto
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