A metal-manufacturing company produces sheet metal. Statistical quality-control technicians randomly select sheets to be inspected for blemishes and size problems. The number of non-conformances per sheet is tallied. Shown here are the results of testing 36 sheets of metal.
Use the data to construct a c chart. What is the centerline? What is the meaning of the centerlinevalue?

Transcribed Image Text:

Number of Noncon Number of Noncon- Sheet Number formances Number formances Sheet 19 20 21 4 23 24 25 26 27 28 29 30 31 32 12 14 15 34 35 36 4 17 18