a)Feed back loops in Scrum
1)Daily : Evaluating the remainin work and updating the sprint burn down chart
2)Sprint : The team velocity during the sprint and updating the sprint burn down chart after the realase plan
3)Release: Deploying value to customer
Reports in Scrum
You can use tools like Rallyand Jira for it
1)Sprint burn down chart : Shows the total remaining effort for the team
Additional variations are, counting open tasks and open user stories
2)Sprint end Report : Complied by scrum master, contains, start and end date of sprint, product backlogs, sprint backlogs, impediments open and closed, Story points delivered
3)Task board : List of taks for each sprint, marked completed or pending
4)Release Burn down chart
5)Velocity Diagram
