Abnormal Observations and Control Limits
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(a) List four rules for detecting abnormal (special cause) observations in a control chart.
(b) Set up a control limits for an x=400, R=5, and n = 4. (Please see the attached document for proper formatting)
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Solution Summary
Rules for detecting abnormal observations are explained. Instructions on how to set up control limits are also provided.
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(a) List four rules for detecting abnormal (special cause) observations in a control chart.
1. These tests are applicable to average (x bar) charts and to individuals (x) charts. However for p charts (charts for evaluating a process using percentages abnormal) if lower control limit is greater ...
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