Which of these does not have the LCL and UCL at ∓3? – McqOptions

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1.	Which of these does not have the LCL and UCL at ∓3?
A.	Standardized u-chart
B.	Standardized R-chart
C.	Standardized c-chart
D.	Standardized p-chart
Answer» C. Standardized c-chart

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