Which diagramming method uses nodes to represent activities and arrows to depict dependencies?

Which diagramming method uses nodes to represent activities and arrows to depict dependencies?

• A. Critical Path Method
• B. Arrow Diagramming Method (ADM)
• C. Precedence Diagramming Method (PDM)
• D. Activity-on-arrow (AOA) method

Answer: (C)

The diagramming approach described is the Precedence Diagramming Method, often called Activity-on-Node. In this method, each activity is drawn as a node (a box labeled with the activity and its duration), and directed arrows show the dependencies between activities. This setup makes it easy to represent different types of relationships (finish-to-start, start-to-start, finish-to-finish, and start-to-finish) and to incorporate timing logic like leads or lags. In contrast, the Arrow Diagramming Method places activities on arrows with nodes representing events, and the Activity-on-arrow method is the same ADM approach. The Critical Path Method is a scheduling technique that can be implemented with these diagram styles, but it’s not itself the diagramming convention.

The diagramming approach described is the Precedence Diagramming Method, often called Activity-on-Node. In this method, each activity is drawn as a node (a box labeled with the activity and its duration), and directed arrows show the dependencies between activities. This setup makes it easy to represent different types of relationships (finish-to-start, start-to-start, finish-to-finish, and start-to-finish) and to incorporate timing logic like leads or lags. In contrast, the Arrow Diagramming Method places activities on arrows with nodes representing events, and the Activity-on-arrow method is the same ADM approach. The Critical Path Method is a scheduling technique that can be implemented with these diagram styles, but it’s not itself the diagramming convention.