1. Why are X-bar and R-Charts used together? Please Explain.

2. The principal focuses and methods of the pioneers of scientific management, what are they?(as represented by Henry Gantt, Frederick Taylor, Frank Gilbreth,etc.). In your words, how is the modern total quality management method different from the above?

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1 The X bar and R range chart is pair of control chart used with processes that have subgroup size o... View the full answer