C Control Chart. An alternative to the U chart is a chart
Chapter 15, Problem 139MEE(choose chapter or problem)
C Control Chart. An alternative to the U chart is a chart based on the number of defects. The chart has centerline at \(n \bar{u}\), and the control limits are
\(\mathrm{UCL}=n \bar{u}+3 \sqrt{n \bar{u}}\)
\(\mathrm{LCL}=n \bar{u}-3 \sqrt{n \bar{u}}\)
(a) Verify that the control limits provided are correct.
(b) Apply this chart to the data in Example 15-5.
(c) Will this chart always provide results equivalent to the U chart?
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