Control Limits and Capability of Process Control

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Control Limits and Capability of Process Control

Specifications on a normally distributed dimension are 600 ± 20. x and R charts are maintained on this
dimension and have been in control over a long period of time. The parameters of these control charts are as
follows (n = 9).
Chart
UCL-616
Center line-610
LCL-604
s Chart
UCL-32.36
Center line = 17.82
LCL-3.28
(a) What are your conclusions regarding the capability of the process to produce items within specifications?
(b) Construct an OC curve for the x chart assuming that is constant.
Transcribed Image Text:Specifications on a normally distributed dimension are 600 ± 20. x and R charts are maintained on this dimension and have been in control over a long period of time. The parameters of these control charts are as follows (n = 9). Chart UCL-616 Center line-610 LCL-604 s Chart UCL-32.36 Center line = 17.82 LCL-3.28 (a) What are your conclusions regarding the capability of the process to produce items within specifications? (b) Construct an OC curve for the x chart assuming that is constant.
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