The series of activities that determines the duration of the project. In a deterministic model, the critical path is usually defined as those activities with float less than or equal to a specified value, often zero. It is the longest path through the pro
A network analysis technique used to predict project duration by analyzing which sequence of activities (which path) has the least amount of scheduling flexibility (the least amount of float). Early dates are calculated by means of a forward pass, using
The current estimate of the point in time when an activity will be completed.
The current estimate of the point in time when an activity will begin.
The date at which, or up to which, the project's reporting system has provided actual status and accomplishments. Also called as-of date.
The decision tree is a diagram that describes a decision under consideration and the implications of choosing one or another of the available alternatives. It incorporates probabilities or risks and the costs or rewards of each logical path of events and
Any measurable, tangible, verifiable outcome, result, or item that must be produced to complete a project or part of a project. Often used more narrowly in reference to an external deliverable, which is a deliverable that is subject to approval by the pro
See logical relationship.
An activity of zero duration used to show a logical relationship in the arrow diagramming method. Dummy activities are used when logical relationships cannot be completely or correctly described with regular activity arrows. Dummies are shown graphically
The number of work periods (not including holidays or other nonworking periods) required to complete an activity or other project element. Usually expressed as workdays or workweeks. Sometimes incorrectly equated with elapsed time. See also effort.
Shortening the project schedule without reducing the project scope. Duration compression is not always possible and often requires an increase in project cost.
In the critical path method, the earliest possible point in time on which the uncompleted portions of an activity (or the project) can finish, based on the network logic and any schedule constraints. Early finish dates can change as the project progresses
In the critical path method, the earliest possible point in time on which the uncompleted portions of an activity (or the project) can start, based on the network logic and any schedule constraints. Early start dates can change as the project progresses a
The physical work accomplished plus the authorized budget for this work. The sum of the approved cost estimates (may include overhead allocation) for activities (or portions of activities) completed during a given period (usually project-to-date). Previou
A method for integrating scope, schedule, and resources, and for measuring project performance. It compares the amount of work that was planned with what was actually earned with what was actually spent to determine if cost and schedule performance are as
The number of labor units required to complete an activity or other project element. Usually expressed as staff hours, staff days, or staff weeks. Should not be confused with duration.
One of the parts, substances, or principles that make up a compound or complex whole.
An assessment of the likely quantitative result. Usually applied to project costs and durations and should always include some indication of accuracy (e.g., ±x percent). Usually used with a modifier (e.g., preliminary, conceptual, feasibility). Some appli
The expected total cost of an activity, a group of activities, or the project when the defined scope of work has been completed. Most techniques for forecasting EAC include some adjustment of the original cost estimate, based on actual project performance