A manufacturer of a particular grade of copper tubing collects data on the number of flaws occurring in 500 metre coils. Suppose they sample a total of 40 coils to initiate control charting. The average number of defects per coil is 2.5.
a. What type of control chart should be used for these data?
b. If the average number of defects per coil is 2.5, calculate the centreline and control limits for the appropriate control chart.

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The Answer of A manufacturer of a particular grade of copper tubing collects data on the number of flaws occurring in 500 metre coils. Suppose they sample a total of 40 coils to initiate control charting. The average number of defects per coil is 2.5.
a. What type of control chart should be used for these data?
b. If the average number of defects per coil is 2.5, calculate the centreline and control limits for the appropriate control chart.

A Manufacturer of a Particular Grade of Copper Tubing Collects