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Question
The number of items rejected daily by a manufacturer because of defects for the last 30 days are:20, 21, 8, 17, 22, 19, 18, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 8
Construct a stem-and-leaf plot.
Answer
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If a company is using an chart for a given process with measurement data, it is generally not important or necessary to use an R chart or s chart.
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A sequence of steadily decreasing points on a control chart is called run down.
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