A process can be considered in a state of control even if one observation is 1.75 standard deviations above the mean.

Question

Quizplus · Accepted Answer

One observation 1.75 standard deviations above the mean is still within the acceptable range for a process in control. In fact, a process can be considered in control as long as the observations fall within the upper and lower control limits, which are typically set at 3 standard deviations above and below the mean. Therefore, option A is correct.

A Process Can Be Considered in a State of Control