## Introduction to statistical quality control |

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### Contents

Chapter | 1 |

STATISTICAL METHODS USEFUL IN QUALITY | 21 |

Chapter 3 | 59 |

Copyright | |

20 other sections not shown

### Common terms and phrases

3-sigma control limits 3-sigma limits analysis of variance approximately assignable cause assignable-cause assumed box plot calculated center line Chapter components computed confidence interval Consider control chart design control limits cumulative-sum control chart cusum data in Exercise defects diameter economic design effect engineering Equation estimate EWMA example factor levels fraction nonconforming control gage hypothesis in-control inspection unit lower control limit measurement methods natural tolerance limits nonconforming control chart nonconforming units normally distributed number of nonconformities observations occur operating optimal optimum out-of-control signal parameters Pareto chart Poisson distribution printed circuit boards probability distribution problem process capability process fraction nonconforming process mean process shifts process standard deviation process variability process-capability quality characteristic quality improvement random sample random variable sample mean Shewhart shown in Figure specification limits statistical control statistical process control Suppose Table target value tensile strength type I error usually