Author Question: A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of ... (Read 143 times)

sabina · **on:** Dec 3, 2019

Question 1

The usual purpose of an R-chart is to signal whether there has been a
◦ change in the percent defective in a sample.
◦ gain or loss in dispersion.
◦ change in sample size.
◦ change in the central tendency of the process output.
◦ change in the number of defects in a sample.

Question 2

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.

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

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