Given that a production process may experience both random and assignable variation, for which type of variation is the source generally easier to identify and eliminate? Why?
Answer to relevant QuestionsWhat are the major phases involved in the Six Sigma quality system? Differentiate between conformance and nonconformance in product quality. What are some of the costs associated with each? How does the purpose of a range chart differ from that of a mean chart? Why is it a good idea to use both of them in monitoring the same process? When a given process is operating properly, the percentage of defectives is 15%. For a 3-sigma p-chart in which the upper and lower control limits are 4 percentage points apart, how large will each sample have to be? Differentiate between the Process Potential Index (Cp) and the Process Capability Index (Cpk). In what way(s) are they similar? In what way(s) do they differ?
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