Essential Mathematical Formulas for PMP Certification Test
A = B + C
Example
Let’s pretend you’re baking cookies. You set a timer to remind yourself when you should finish them. Assume you know that the cookies normally bake in 10-12 minutes. You set control limits: if they are not done in 15 minutes, or if they are not completed in 8 minutes, something is wrong.
Control limitations work in the same way in a project. Assume you’re tracking the time it takes to complete specific tasks:
– It was estimated that Task A would take 5-7 days to complete.
– If the task takes more than 9 days or is done in less than 3 days, these points act as control limits.
As a result, if Task A takes 10 days to complete, it has exceeded the upper control limit, indicating the possibility of a problem or delay. If Task A is finished in fewer than two days, it falls below the lower control limit, indicating that it was rushed or done too quickly.
Control limits act as checkpoints for project managers, enabling them in detecting when a project’s development deviates too far from what was anticipated. They serve as warning signs that it is time to investigate and maybe take action to get the project back on track.
