1 You are operating a process that makes approximately 150 gallons of dibutyl ether. Due to the changes in the viscosity of this product as itis drummed, you must sample each drum as it is filled. Because each drum within a batch is logically linked to the other drums, you decide to implement an XR chart for this activity. Given the initial data below, calculate the x and range for each batch, the mean and R for the entire data set, and the control limits you would expect to set for this activity. Using the template at the end of this chapter, plot your data with the control limits. What can you conclude from your initial chart? Chapter 5 Questions 1. Examine the chart in Figure 15.3. Apply the three main indicators for interpreting control charts. What point or points would you investigate? What do the last seven points on this graph tell you? Chapter 16 Questions 1. List the strengths and weaknesses of a Cpk index versus a Cpindex. 2. Compare and contrast the differences in the calculation of a Cpk index, a Cp index, and a Ppk index Chapter 17 Questions 1. What action can help gain support for quality improvement opportunities? 2. What is the importance of the ISO 14001 standard