<Ul> <Li> Cause - and - effect diagrams (sometimes called Ishikawa or "fishbone" diagrams) </Li> <Li> Pareto charts </Li> <Li> Process mapping, data gathering tools such as check sheets </Li> <Li> Graphical tools such as histograms, frequency diagrams, spot charts and pie charts </Li> <Li> Run charts and control charts </Li> <Li> Scatter plots and correlation analysis </Li> <Li> Flowcharts </Li> </Ul> <Li> Cause - and - effect diagrams (sometimes called Ishikawa or "fishbone" diagrams) </Li> <Li> Process mapping, data gathering tools such as check sheets </Li> <Li> Graphical tools such as histograms, frequency diagrams, spot charts and pie charts </Li>

Who introduced the concept of quality circles in india