Definition of Relative Estimation:
Relative estimation is one of estimation approaches in Agile. Scrum teams for example use relative estimation to determine how much effort is needed to complete the individual tasks of a project. Tasks or user stories are compared against similar, previously completed tasks.
Use of Relative Estimation:
Agile teams use relative estimation to find out how much time and effort will be needed to complete their workload during an iteration based on how long a similar task took to complete. Scrum teams often use a non-numerical scale to compare tasks during their planning session with the help of methods such as planning poker, using the Fibonacci sequence or tee-shirt sizing.
Benefits of Relative Estimation:
- Helps to find accurate estimates for releases and forecasting.
- Eliminates waste.
- Prevents confusion between estimates and commitments.
- Leads to increased customer satisfaction.