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Relative Estimation in the context of Scrum
Relative Estimation in Scrum
In Scrum, relative estimation is a technique used by teams to estimate the size of user stories or tasks in relation to one another, rather than providing absolute estimates in hours or days. This approach allows for quicker and more efficient estimation by leveraging the team's collective knowledge and experience.
Key Points about Relative Estimation:
Fibonacci Sequence: Teams often use a Fibonacci sequence (1, 2, 3, 5, 8, 13, etc.) to assign points to user stories based on their perceived complexity and effort required.
Comparative Sizing: Team members compare the task at hand to previously completed tasks to determine its relative size and effort.
Consensus Building: Through discussion and deliberation, the team reaches a consensus on the estimated size of each user story, ensuring a shared understanding among team members.
Ideal Day: Rather than estimating in hours, teams focus on what constitutes an "ideal day" of work for them, incorporating factors like team velocity and capacity.
By using relative estimation, Scrum teams can streamline their planning process, improve accuracy in forecasting project timelines, and foster better collaboration among team members.
Resources:
- Agile Estimation and Planning by Mike Cohn
- Effective Agile Estimation Techniques by Scrum.org
- Relative Estimation in Agile by Agile Alliance
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by Stephan Hagemann