We are in the process of developing a formal business case to add dedicated scrum masters to our teams. We currently have the development manager 'acting' as a scrum master, but in reality they are just scheduling the stand-up. We have no burn downs, velocity tracking, or any of the other core functions of the scrum master. I was curious if there was a way to calculate hard $'s to adding the role to our team. For example, are there studies that state a scrum master will add 10% velocity to a team or anything like that?
Thank you!