<Tr> <Th> First described by </Th> <Td> Joseph M. Juran </Td> </Tr> <Tr> <Th> Purpose </Th> <Td> To assess the most frequently occurring defects by category † </Td> </Tr> <P> A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line . </P> <P> The left vertical axis is the frequency of occurrence, but it can alternatively represent cost or another important unit of measure . The right vertical axis is the cumulative percentage of the total number of occurrences, total cost, or total of the particular unit of measure . Because the values are in decreasing order, the cumulative function is a concave function . To take the example below, in order to lower the amount of late arrivals by 78%, it is sufficient to solve the first three issues . </P>

How are bar charts and pareto charts related
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