In a stable measurement process, we expect the majority of measurements to fall within control limits that were established based on statistical evaluation of historical data.  Measurements that fall outside the control limits are assumed to be "out of control."		References in this course: M1L3T2, p. 4/27
An outlier is an observed value that falls outside the plus/minus three standard deviation limits of a normal distribution.		References in this course: M1L2T2, p. 14/32




