The data shown in Table 6E.4 are the deviations from nominal diameter for holes drilled din a
Question:
(a) Set up x and R charts on the process. Is the process in statistical control?
(b) Estimate the process standard deviation using the range method.
(c) If specifications are at nominal ï±ï 100, what can you say about the capability of this process? Calculate the PCR Cp.
Transcribed Image Text:
TABLE 6E.4 Hole Diameter Data for Exercise 6.9 Sample Number , , 1 30 +50-20 +10 +30 0 +50 -60 -20 +30 3 -50 +10 +20 30 +20 4 10-10 +30 -20 +50 5 +20 40+50 +20 +10 0 0+40 -40 +20 7 0 +20-2010 8 + +30 -100 0 0 +20-20 +10 10 +10 +20 +30 +0 +50 11 +40 0 +20 0 +20 12 30+20 +30 +10 +40 13 +30 30 010 +10 14 +30-10+50-10-30 15 +10 0 +50 40 0 0 0+30 0 17 +20 +20 +30 +30 -20 18 +10 20 50 30 +10 19 50-10 +40 +20 0 20 +50 0 0 30 +10 +70-30 16
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Related Book For
Introduction to Statistical Quality Control
ISBN: 978-1118146811
7th edition
Authors: Douglas C Montgomery
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