Has been for a very long time. Consider the Rule of Seven[1] against the historical data. [1] https://www.brainbok.com/guide/pm-study-notes/rule-of-seven-contr

Has been for a very long time. Consider the Rule of Seven[1] against the historical data. [1] https://www.brainbok.com/guide/pm-study-notes/rule-of-seven-control-charts/ https://www.brainbok.com/guide/pm-study-notes/rule-of-seven-...