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Author Question: Plots of sample ranges indicate that the most recent value is below the lower control limit. What ... (Read 77 times)

javeds

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on: Dec 3, 2019

Question 1

A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 16.01, and the average range is 5.3. From Table S6.1, the appropriate value of D3 is 0, and D4 is 2.115. The UCL and LCL for this range chart are
◦ 31.91 and 0.11.
◦ 11.2 and 0.
◦ 33.9 and 0.
◦ 6.3 and 0.
◦ 33.9 and 11.2.

Question 2

Plots of sample ranges indicate that the most recent value is below the lower control limit. What course of action would you recommend?
◦ The process is out of control; reject the last units produced.
◦ Since there is no obvious pattern in the measurements, variability is in control.
◦ One value outside the control limits is insufficient to warrant any action.
◦ Lower than expected dispersion is a desirable condition; there is no reason to investigate.
◦ Variation is not in control; investigate what created this condition.
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Marked as best answer by javeds on Dec 3, 2019

xiaomengxian

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Reply #1 on: Dec 3, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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javeds

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Reply 2 on: Dec 3, 2019
Excellent

TheNamesImani

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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