1.

What is the formula for UCL for x bar chart when is known?

A. (UCL = bar{ bar{x}} + A_3 bar{s} )
B. (UCL = bar{ bar{x}} A_2 bar{s} )
C. (UCL = bar{ bar{x}} A_3 bar{s} )
D. (UCL = bar{ bar{x}} + A_2 bar{s} )
Answer» B. (UCL = bar{ bar{x}} A_2 bar{s} )


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