Rule of seven
Project Management Professional glossary · Project Management Professional
Definition
A control chart heuristic holding that seven consecutive points on one side of the mean, or trending in one direction, indicate an assignable cause even when all points are within the control limits.
Rule of seven in plain English
A bakery that only tastes cookies after they burn is paying the expensive kind of lesson. Catching problems in the recipe is cheaper than refunding customers. Rule of seven is about where in that chain you look, measure, and fix. Hold onto this precise job description: A control chart heuristic holding that seven consecutive points on one side of the mean, or trending in one direction, indicate an assignable cause even when… On a stem, name whether Rule of seven is about timing, ownership, measurement, or delivery style — then eliminate the answer that borrows a cousin concept from the wrong phase.
Practice Rule of seven
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