7 quality control tools

To ensure that the desired outputs products or services are up to customers and international standards, 7 tools are widely used to measure quality in the supply chain industry. They are mainly used to guide strategic operations decisions. A diagram that shows the flow existing between different processes.

7 quality control tools

The seven tools[ edit ] Affinity diagram KJ method [ edit ] Affinity diagrams are a special kind of brainstorming tool that organize large amounts of disorganized data and information into groupings based on natural relationships.

It was created in the s by the Japanese anthropologist Jiro Kawakita. It is also known as KJ diagram, after Jiro Kawakita. An affinity diagram is used when: You are confronted with many facts or ideas in apparent chaos.

Issues seem too large and complex to grasp. Cause-and-effect diagram Interrelationship diagrams IDs displays all the interrelated cause-and-effect relationships and factors involved in a complex problem and describes desired outcomes. The process of creating an interrelationship diagram helps a group analyze the natural links between different aspects of a complex situation.

Ishikawa had a desire to ‘democratize quality’: that is to say, he wanted to make quality control comprehensible to all workers, and inspired by Deming’s lectures, he formalized the Seven Basic Tools of Quality Control. The Perform Quality Control process of the Project Quality Management knowledge area has several quality control tools and techniques that are also used in the Perform Quality Assurance process. The seven quality control tools can be easily created in Excel with this add-in. Get a 30 day trial of QI Macros software today to create these 7 QC tools.

Tree diagram[ edit ] This tool is used to break down broad categories into finer and finer levels of detail. It can map levels of details of tasks that are required to accomplish a goal or solution or task. Developing a tree diagram directs concentration from generalities to specifics.

Prioritization matrix[ edit ] This tool is used to prioritize items and describe them in terms of weighted criteria. It uses a combination of tree and matrix diagramming techniques to do a pair-wise evaluation of items and to narrow down options to the most desired or most effective.

Popular applications for the prioritization matrix include return on investment ROI or cost—benefit analysis investment vs.

Matrix diagram or quality table[ edit ] This tool shows the relationship between two or more sets of elements.

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At each intersection, a relationship is either absent or present. It then gives information about the relationship, such as its strength, the roles played by various individuals or measurements.

The matrix diagram enables you to analyze relatively complex situations by exposing interactions and dependencies between things. Six differently shaped matrices are possible: Process decision program chart[ edit ] A useful way of planning is to break down tasks into a hierarchy, using a tree diagram.

The process decision program chart PDPC extends the tree diagram a couple of levels to identify risks and countermeasures for the bottom level tasks.

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Different shaped boxes are used to highlight risks and identify possible countermeasures often shown as "clouds" to indicate their uncertain nature. The PDPC is similar to the failure modes and effects analysis FMEA in that both identify risks, consequences of failure, and contingency actions; the FMEA also rates relative risk levels for each potential failure point.

Activity network diagram[ edit ] See also: Program evaluation and review technique This tool is used to plan the appropriate sequence or schedule for a set of tasks and related subtasks.

It is used when subtasks must occur in parallel. The diagram helps in determining the critical path longest sequence of tasks.Tool 3: Control chart visual representation of comparison between actual performance and pre-determined control limits; helps in detecting assignable causes of variation, also called C chart.

Tool 4: Flowchart visual representation of relationship between planned performance and .

Seven management and planning tools - Wikipedia

However, there are seven management tools for quality control that are the most common. Different tools are used for different problem solving opportunities and many of the tools can be used in different ways. Quality control is a crucial segment of quality management which can’t be handed over to light hands to upgrade it.

Instead of manual efforts, quality can be better driven by robust tools . Jul 18,  · 7 QC tools are the 7 basic tools of quality control used for quality improvement and productivity enhancement.

7 basic. 7 QC tools are; Process Flow Chart |.

7 quality control tools

Figure 1: The seven quality control tools (Kerzner, ). Check Sheet Check sheets are simple forms with certain formats that can aid the user to record data in an firm systematically. Data are “collected and tabulated” on the check sheet to record the frequency of specific events during a data.

Seven Quality Tools The Seven Tools Histograms, Pareto Charts, Cause and Effect Diagrams, Run Charts, Scatter Diagrams, Flow Charts, Control Charts Ishikawa’s Basic Tools of Quality: Ishikawa’s Basic Tools of Quality Kaoru Ishikawa developed seven basic visual tools of quality so that the average person could analyze and interpret data.

Seven Quality Control Tools | QC Tools | QI Macros