Author Question: According to the text, the most common choice of limits for control charts is usually (Read 34 times)

evelyn o bentley · **on:** Dec 3, 2019

Question 1

To set

-chart upper and lower control limits, one must know the process central line, which is the
◦ size of the population.
◦ total number of defects in the population.
◦ average range.
◦ percent defects in the population.
◦ average of the sample means.

Question 2

According to the text, the most common choice of limits for control charts is usually
◦ ± 2 standard deviations.
◦ ± 1 standard deviation.
◦ ± 1 standard deviations for means and ± 2 standard deviations for ranges.
◦ ± 3 standard deviations for means and ± 2 standard deviations for ranges.
◦ ± 3 standard deviations.

fraziera112 · **Reply #1 on:** Dec 3, 2019

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