Scrum meetings represent a project feedback/control opportunity, both up and down the hierarchy. Each scrum meeting in common project management scenario runs daily for fifteen minutes or less, during which the project manager or scrum master poses following questions:
What did you do yesterday?
What are you doing today?
What obstacles are keeping you from completing your tasks?
This interview / discussion puts the project manager in the position of understanding the progress made upon the project, and compare it to the planned time in 8 hour increments. This real time Earned Value Management compares of the planned time and targets to the achieved time and targets daily.