Monday 9 September 2013

7 TOOLS OF QUALITY CONTROL.

The SEVEN TOOLS OF QUALITY is a name given to the basic 7 tools used by quality personnel around the world to counteract on quality related issues. They are also called basic tools of quality assurance because they are easy to implement and understand.

  • CAUSE AND EFFECT DIAGRAM:- (also called fishbone diagram or Ishikawa diagram) It is used to identify as many possible causes for a for a problem and divides them into useful categories.
  • CHECK SHEET:- It is a format used to collect required data and analyzing it, it can be adopted for a variety of purposes in an production organization.
  • CONTROL CHART:- It is a graph used to study process variations over time or with changing conditions, it is used to assure that the effect of changing causes stays within restricted limits.
  • HISTOGRAMS:- It is a graph used for spotting frequency distributions i.e. it is used to highlight the different values in a collection of data.
  • PARETO CHARTS:- They are used to distinguish the significant causes from less significant one, it helps in dividing the causes into vital few and trivial many.
  • SCATTER DIAGRAM:- They are used to plot a paired data, one on each axis so that a relationship can be established between them.
  • STRATIFICATION:- It is used to differentiate between data collected from variety of resources and visualizes the data variation trend observed from different sources and establishing a relationship between them, if any. 

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