appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns. PX ..56.7 Auto pistons at Wenming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 10 pistons produced each day, the mean and the range of this diameter have been as follows: DAY MEAN (MM) RANGE (MM) 156.9 4.2 153.2 153.6 155.5 156.6 5.0 4.5 What is the value of F? What is the value of R? What are the UCL, and LCLy, using 36? Plot the data. What are the UCL and LCLa, using 30? Plot the data. If the true diameter mean should be 155 mm and you want this as your center (nominal) line, what are the new UCL and

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Statistical Process Control

The use of statistical methods to observe and manage a process to make sure that it operates at its full potential and thus produce a confirming product is called Statistical Process Control.