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Pareto Chart

The Pareto Chart is a type of bar charts where bars are categories and the height of the bar represents its frequency.  The bars are sequenced in descending order and there is also a cumulative percentage line that indicates the added contribution of each category to the total. The Pareto Chart is usually used to identify the ‘vital few’ from the ‘trivial many’.  For example, if categories are different types of defects, it helps you identify the most frequently occurring defect to help you focus improvement efforts.