Control Chart with subgroups entering the project at different times
We are created a process across 9 different divisions. All the Divisions did not start at the same time. As other Divisions learned of the initial cohort success, they joined the project. In aggregate, by December 2023 we were consistently achieving 93% success. We created a control chart using the Numerators and denominators of all the Divisions participating in each month. Therein lies the ...