The upper and lower control limits are usually a distance of _______ from the centerline.
A) 3 standard deviations
B) 1 standard deviation
C) 2 standard deviations
D) 3.5 standard deviations

Question

Quizplus · Accepted Answer

The upper and lower control limits in a control chart are typically set at 3 standard deviations from the centerline to capture the majority of data points in a normal distribution.

The Upper and Lower Control Limits Are Usually a Distance