A machine at the Pacific Fruit Company fills boxes with raisins. The labelled weight of the boxes

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A machine at the Pacific Fruit Company fills boxes with raisins. The labelled weight of the boxes is 255 g. The company wants to construct an R-chart to monitor the filling process and make sure the box weights are in control. The quality-control department for the company samples five boxes every two hours for three consecutive working days. The sample observations are as follows:


Box Weights (g) Samples 256.85 258.83 254.30 250.89 239.84 261.10 253.73 241.54 244.09 257.70 265.07 253.73 260.82 3 256


Samples Box Weights (g) 4 259.97 261.10 256.56 255.43 270.17 261.10 251.46 246.92 256.56 265.07 247.77 236.72 240.97 256


Construct an R-chart from these data with 3σ control limits, plot the sample range values, and comment on process control.

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Operations Management Creating Value Along the Supply Chain

ISBN: 978-1118301173

1st Canadian Edition

Authors: Roberta S. Russell, Bernard W. Taylor, Ignacio Castillo, Navneet Vidyarthi

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