The standardized control chart has the center line at ___ – McqOptions

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1.	The standardized control chart has the center line at ___
A.	1 ‚âà√¨‚àö√¢
B.	2 ‚âà√¨‚àö√¢
C.	Zero
D.	-1‚âà√¨‚àö√¢
Answer» D. -1‚âà√¨‚àö√¢

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