Pareto Principle

1Cause-and-Effect DiagramsShow the relationships between a problem and its possible causes.Developed by Kaoru Ishikawa (1953)Also known as Fishbone diagramsIshikawa diagrams2Cause and Effect SkeletonQualityProblemMaterialsEquipmentPeopleProcedures3 Fishbone Diagram

4QualityProblemMachinesMeasurementHumanProcessEnvironmentMaterialsFaulty testing equipmentIncorrect specificationsImproper methodsPoor supervisionLack of concentrationInadequate trainingOut of adjustmentTooling problemsOld / wornDefective from vendorNot to specificationsMaterial-handling problemsDeficienciesin product designIneffective qualitymanagementPoor process designInaccuratetemperature controlDust and DirtFishbone Diagram 10/12/2015Statistics4A cause-and-effect diagram, or fishbone diagram, is a chart showing the different categories of problem causes.

5Cause-and-Effect DiagramsAdvantagesmaking the diagram is educational in itselfdiagram demonstrates knowledge of problem solving teamdiagram results in active searches for causesdiagram is a guide for data collection

6Cause-and-Effect DiagramsTo construct the skeleton, remember:For manufacturing - the 4 Msman, method, machine, materialFor service applicationsequipment, policies, procedures, people