Complete Guide on Float Calculation in PMP Exam

Float calculation is an essential concept in project scheduling development. Why it is important: The computation of 'float' or 'slack' helps to understand the flexibility in scheduling activities without affecting the project completion date. Determining the float helps in managing project risks, re-allocating resources, and optimising project schedules.
What it is: Float calculation refers to the amount of time that a project activity can be delayed, without causing a delay to subsequent activities or the project's overall completion.
How it works: This is calculated by using the earliest and latest start and finish times. There are two types of floats - total float and free float. Total float refers to the total time that you can delay a task without delaying the project. Free float is the total time that you can delay a task without delaying the next task.
How to answer questions: While encountering questions on float calculation in an exam, it's crucial to understand the difference between total float and free float. Knowing how to calculate both is essential, and diagrams can be helpful in understanding the relationship between different tasks and their floats.
Exam Tips: Answering Questions on Float Calculation: Remember that the float or slack is usually zero for activities on the critical path. Think through the implications of delaying tasks on your project schedule to answer questions around this. Practice calculation-based questions, as this is fundamental to mastering the concept of float calculation.