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Project Management & Agile · Advanced

Negative Float

Float with a value below zero, indicating that the schedule cannot meet a required date.

Definition

Negative float arises when an imposed finish date is earlier than the calculated early finish, or when activities slip. It signals the need for compression or re-planning.

Example

The calculated finish is May 20 but the deadline is May 10: -10 days of float.

Exam tip

Negative float means schedule compression or scope change is needed.

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