Suppose that you have created control charts to measure the length of candles. The process is in a state of control if either the x-bar chart is in control or the R-chart is in control.

Question

Quizplus · Accepted Answer

For a process to be considered in a state of control, both the x-bar chart (which monitors the process mean) and the R-chart (which monitors the process variability) must be in control. If either chart shows the process to be out of control, it indicates that the process is not stable.

Suppose That You Have Created Control Charts to Measure the Length