Posted: October 21st, 2022
Why are x-bar and r-charts usually used hand in hand?
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Hi Everyone! For this discussion, the initial post by each student should be in the range of 200-250 words. Also, there should be a minimum of three posts by everyone. Please choose one topic for your initial post and respond to other students’ posts as your second and third posts here.
Some questions to address for this discussion…
Why is the central limit theorem so important in quality control?
Why are x-bar and R-charts usually used hand in hand?
Explain the difference between c-charts and p-charts.
When using a control chart, what are some patterns that would indicate that the process is out of control?
What might cause a process to be out of control?
Explain why a process can be out of control even though all the samples fall within the upper and lower control limits.
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