Thank you for another excellent deep dive into why control chart rules work so effectively for sttistically stable processes.
I know you don't need to know this, but to me the other benefit of control charts over histograms is how special cause constitutes not only an alarm that something has changed, but quite often also offers information about what caused the change. The rules keep the decision objective, the visual display provides potential insight into the process.
Thank you for another excellent deep dive into why control chart rules work so effectively for sttistically stable processes.
I know you don't need to know this, but to me the other benefit of control charts over histograms is how special cause constitutes not only an alarm that something has changed, but quite often also offers information about what caused the change. The rules keep the decision objective, the visual display provides potential insight into the process.