Final answer:
In project management, a rough top-down estimate is used during the initiation phase, while a detailed bottom-up estimate is likely during the planning phase.
Step-by-step explanation:
In project management, a rough top-down estimate is typically used during the initiation phase, while a detailed bottom-up estimate is more likely during the planning phase.
During the initiation phase, project managers may use high-level information or historical data to provide a quick estimate of the project's cost and duration. This estimate helps in determining the feasibility of the project and securing approval to move forward.
During the planning phase, a detailed bottom-up estimate is created by breaking down the project into smaller tasks and estimating the effort, time, and resources required for each task. This estimate provides a more accurate and detailed understanding of the project's scope, cost, and schedule.