Final answer:
In project management, the number of resources needed for projects in a portfolio often exceeds the amount of resources available. This is known as resource over allocation.
Step-by-step explanation:
In project management, the number of resources needed for projects in a portfolio often exceeds the amount of resources available. This can be attributed to the fact that projects usually require more resources than what is readily available.
One way to quantify this difference is through a factor called resource over allocation. Resource overallocation occurs when the demand for resources exceeds the supply, resulting in resource conflicts and potential delays in project completion.
For example, if a portfolio of projects requires 10 resources but the available resources are only 5, then the factor by which the resources needed exceed the amount available is 2, meaning that the resource demand is twice the available capacity.