Seven basic tools of quality: Difference between revisions

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The '''seven basic tools of quality''' is a designation given to a fixed set of graphical techniques identified as being most helpful in [[troubleshooting]] issues related to [[quality (business)|quality]].{{sfn|Montgomery|2005|p=148}} They are called ''basic'' because they are suitable for people with little formal training in statistics and because they can be used to solve the vast majority of quality-related issues.{{sfn|Ishikawa|1985|p=198|ps=: "From my past experience as much as ninety percent of all problems within a company can be solved by means of these tools."}}

==Overview==

The seven tools are:{{sfn|Tague|2005|p=15}}<ref>{{harvnb|Ishikawa|1985|p=198|ps=: "Elementary Statistical Method (the so-called Seven Tools) 1. Pareto chart: The principle of vital few; trivial many 2. Cause and effect diagram (This is not precisely a statistical technique) 3. Stratification 4. Check sheet 5. Histogram. 6. Scatter diagram (analysis of correlation through determination of median; in some instances, use of binomial probability paper) 7. Graph and control chart (Shewhart control chart)".}}</ref>{{sfn|Imai|1986|pp=239–240|ps=: "The seven statistical tools used for such analytical problem-solving are: 1. Pareto diagrams&nbsp;... 2. Cause-and-effect diagrams&nbsp;... 3. Histograms&nbsp;... 4. Control charts&nbsp;... 5. Scatter diagrams&nbsp;... 6. Graphs&nbsp;... 7. Checksheets."}}

*[[Ishikawa diagram|Cause-and-effect]] diagram (also known as the "fishbone" or Ishikawa diagram)