The data below represents the number of complaints recorded the customer service desk at a local call center. The data shows the number of complaints logged each day over a seven day period.

1)   Which of the following are true about the process?

A.   Special causes of variation are indicated

B.   There are only common causes of variation

C.   The process is in control

D.   Process is within specification limits.

E.   B, C and D are correct

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