Question: An inspector wants to develop 3 - sigma level control charts ( below table provides factors for 3 sigma level ) for the weight of

An inspector wants to develop 3-sigma level control charts (below table provides factors for 3 sigma level) for the weight of firewood that comes in a bag. Due to uneven shape of wood, weight of bag varies a lot.
Draw X-bar chart and R-chart. For both charts, calculate UCL, CL and LCL by using the factors provided in the table. Is the process in control? Discuss your conclusion.
An inspector wants to develop 3-sigma level control charts (below table

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