![]() It is a tool for discovering all the possible causes for a particular effect.The cause and effect diagram is also called the ishikawa diagram or the fishbone diagram.The manufacturer could concentrate on reducing the defects which make up a bigger percentage of all the defects or focus on eliminating the defect that causes monetary loss. What we see from that is a product line may experience a range of defects. Pareto charts are used when products are suffering from the different defects but the defects are occurring at different frequency or only few accounts for most of the defects presents and different defects incur different cost. Then a histograms and frequency chart is conducted showing the number of occurrencesĪn example of how a Pareto chart can be used.The data must be collected and classified into categories.First information must be selected based on types or classifications of defects that occur as a result of process.– Remember the 80/20 rules states that approximately 80% of the problems are created by approximately 20% of the causes. They are actually histograms added by 80/20 rule adapted by Joseph Juran.Pareto charts are used to identify and prioritize problem to be solved.Say for instance a company wanted to measure the revenues of other companies and wanted to compare the numbers Histograms can be used to determine distribution of sales For each category, find the related frequency and make the horizontal mark to show that frequency.Įxamples of how the histograms can be used.Each mark on either axis should be in equal increments. ![]() – The frequency of that set would be the dependent variable – The characteristics you group the data by would be the independent variable Then label the data as the independent set or the dependent set. ![]()
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