On a control chart,two data points near the UCL requires an investigation for the cause of variation,however two data points near the LCL does not call for any investigation and is part of normal behavior.

Question

Quizplus · Accepted Answer

Both data points near the Upper Control Limit (UCL) and data points near the Lower Control Limit (LCL) can indicate potential issues or non-random variation in the process, and both situations typically warrant investigation to understand the cause of the variation.

On a Control Chart,two Data Points near the UCL Requires