The following data were considered in Quality Engineering [An SPC Case Study on Stabilizing Syringe Lengths (19992000,
Question:
The following data were considered in Quality Engineering [€œAn SPC Case Study on Stabilizing Syringe Lengths€ (1999€“2000, Vol. 12(1))]. The syringe length is measured during a pharmaceutical manufacturing process. The following table provides data (in inches) for 20 samples each of size 5.
(a) Using all the data, find trial control limits for X and R charts, construct the chart, and plot the data. Is this process in statistical control?
(b) Use the trial control limits from part (a) to identify out-of- control points. If necessary, revise your control limits assuming that any samples that plot outside the control limits can be eliminated.
(c) Repeat parts (a) and (b) for XÌ… and S charts.
Step by Step Answer:
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger