Question: When a control chart has been constructed and is being used to assure process quality, which of the following indicate that a process is not

When a control chart has been constructed and is being used to assure process quality, which of the following indicate that a process is not operating in a satisfactory or acceptable manner?

.

Plotted sample values are outside the upper or lower control limits

.

Plotted samples fall within the upper and lower control limits

.

.

Plotted samples demonstrate a non

-

random pattern or trend

.

Plotted samples demonstrate a purely random pattern or trend

A and

C

A and D

When a control chart has been constructed and is being used

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