The upper control limits for the GCC will be ____________ for the x c

1.	The upper control limits for the GCC will be ____________ for the x chart.
A.	UCL= ( bar{ bar{x}}+A_2 overline{R} )
B.	UCL= ( bar{ bar{x}}-A_2 R )
C.	UCL= ( bar{ bar{x}}-A_2 overline{R} )
D.	UCL= ( bar{ bar{x}}+A_2 R )
Answer» B. UCL= ( bar{ bar{x}}-A_2 R )

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