![]() ![]() Complete the diagram with titles and units of reference.( Figure 1) Draw the vertical axis on the right edge and scale it. Draw horizontal and vertical axes on graph paper. Calculate the cumulative number and percentage. Arrange the data in order of decreasing size. ![]() Decide also the period for which the data is to be collected. Decide on the problem to be addressed or items to study and collect data. Pareto charts can help to focus improvement efforts on areas where the largest gains can be made.Ĩ0-20 rule Figure 1 : Example of Pareto diagramĥ Procedure 1. ![]() A cumulative percentage line helps you judge the added contribution of each category. The categories are often “defects.” This tool is based on the idea that the majority of defects are caused by few defective item, which classifies the quality problem into the “vital few” and “trivial many” (80-20 rule). Control Chart 7 Toolsģ Pareto Diagram Pareto charts are a type of bar chart in which the horizontal axis represents categories of interest, rather than a continuous scale. ![]()
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