P-chart Control Chart for Defect Rates

  Рет қаралды 74

Ron Lembke

Ron Lembke

Күн бұрын

We compute the control limits for a P chart
p-bar = average defect rate = total number of defective items, divided by the total number of items sampled
n-bar = average sample size
s = sample standard deviation
UCL = p-bar + 3 * s
LCL = p-bar - 3 * s

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