When using a control chart, a manager does NOT investigate the activity when:
A)all observations are outside the preset range
B)some observations are outside the preset range
C)all observations are within the range of preset standard deviations
D)almost all observations are within the range of two standard deviations

Question

Quizplus · Accepted Answer

If all observations are within the range of preset standard deviations, it indicates that the process is under control and performing consistently. No investigation is needed in this case. However, if some or all observations are outside the preset range or are close to the control limits, it indicates that the process may be out of control and requires investigation to identify and address the causes of variations.

When Using a Control Chart, a Manager Does NOT Investigate