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Pareto Analysis
QC-CALC is equipped with Pareto analysis charts which provide an indication of
the main sources of defective characteristics. A Pareto chart is a bar style
graph of defective characteristics arranged in order of significance. The
characteristic causing the greatest number of defects is displayed at the
left-most position on the bar graph. The traditional concept behind Pareto
charts is to highlight the "significant few" causes of defects from the
"trivial many". Generally speaking, most quality control problems can be
attributed to a relative few number of causes. Using a Pareto chart to sort
defective characteristics in order of importance allows you to focus on the
main cause of problems.
In QC-CALC, Pareto charts operate on characteristics (dimensions) with variable
data. All or a user selected subset of characteristics in a data file can be
included in the analysis.
Uses of the Pareto chart
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Highlight the most serious causes of defects
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Track the results of corrective actions
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Monitor the quantity of defects over time
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