Question: Zones A, B, and C on a control chart refer to: a Zones related to the number of standard deviations off of the mean in

Zones A, B, and C on a control chart refer to:

a

Zones related to the number of standard deviations off of the mean in the control chart where C is the centerline, B is between +/-2 and A is between +/- 3 standard deviations

b

Zones related to the number of standard deviations off of the mean in the control chart where C is +/- 3, B is between +/-2 and A is between +/- 1 standard deviations

c

Zones related to the number of standard deviations off of the mean in the control chart where C is +/- 1, B is between +/-2 and A is between +/- 3 standard deviations

d

Zones related to the number of standard deviations off of the mean in the control chart where C is +/- 1, B is > 1 but <3, and A is >3 standard deviations

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