Statistics and Probability with Applications for Engineers and Scientists, Preliminary Edition

Chapter 11

Statistical Quality Control and Phase I Control Charts

The focus of this chapter is a discussion of Phase I control charts for variables, attributes, and learning about process capability. The topics covered are:

• Some valuable tools for achieving quality such as the Pareto chart, cause-and-effect diagram, and defect concentration diagram
• Shewhart and R control chart
• Shewhart and R control chart when process mean μ and process standard deviation σ are known
• Shewhart control chart for individual observations
• Shewhart control chart when sample size is variable
• The p chart with sample size constant
• The p chart with sample size variable
• The np chart
• The c chart
• The u chart
• Process capability

Learning Outcomes:

After studying this chapter, the reader will be able to:

• Understand the difference between variables and attributes.
• Design Phase I variable control charts and attribute control charts.
• Set up and R control charts and use them in different scenarios.
• Set up and R control charts when process mean μ and process standard deviation σ are known.
• Apply Western Electric rules ...