What can be determined by summing the project activities into an overall schedule?

Summing the project activities into an overall schedule allows for a clear understanding of the total resource demand for a project. This includes not only the time each activity will take but also the necessary resources, such as personnel, equipment, and materials, that will be required to complete those activities on time. By creating an integrated schedule, project managers can visualize the overall resource allocation and identify potential constraints or bottlenecks, ultimately leading to better resource management and project planning.

In contrast, while the overall schedule contributes to insights about the total budget projection, final project deadlines, and workforce size, it is specifically the compilation of all activities that gives a comprehensive view of resource demand. The budget, deadlines, and workforce can be influenced by the total resource demand, but the schedule primarily reflects how those resources will be utilized throughout the project lifecycle.