The following data were collected on nonconfor-mances for a period

The following data were collected on nonconfor-mances for a period

The following data were collected on nonconfor-mances for a period of 10 days:

a. On what day is the proportion of nonconformances largest? Smallest?

b. What are the LCL and UCL?

c. Are there any special causes of variation?

The following data were collected on nonconfor-mances for a period