Agile proj management. Story points vs item size, Burn down chart, Retropective

 Story Points:

- Definition: Story points are a relative measure of the overall complexity, effort, and uncertainty involved in completing a user story or task.

- Relative Estimation: For example, if the team considers a particular user story to be twice as complex as another, it might assign it double the story points.

- Team Consensus: During backlog refinement, team members discuss and collectively assign story points to user stories. They might use techniques like Planning Poker to reach a consensus.

- Focus on Effort: A user story involving integrating a third-party API might be assigned more story points due to the technical complexity, even if it's a small task in terms of actual work.

- Used for Velocity: If a team completes user stories totaling 20 story points in a sprint, their velocity for that sprint is 20.


 Item Size:

- Definition: Item size refers to the actual size or duration of a task or user story in terms of hours, days, or another unit of time.

- Absolute Estimation: For example, a developer estimates that implementing a specific feature will take approximately 8 hours of work based on their experience and knowledge of the task.

- Individual Estimation: Different team members might estimate the same task differently based on their skill level and familiarity with the technology involved.

- Focus on Duration: A task involving setting up a development environment might be estimated to take two days to complete.

- Used for Planning: Item size estimates help in planning the allocation of resources and scheduling tasks within a sprint.


 Team Capacity:

- Definition: Team capacity refers to the total amount of work a team can realistically accomplish in a given time frame, typically a sprint.

- Calculation: Team capacity is determined based on factors such as team size, individual availability, planned time off, and any other commitments or constraints.

- Used in Planning: Team capacity is used during sprint planning to determine how much work the team can commit to completing in the upcoming sprint. It helps ensure that the team doesn't overcommit and can realistically achieve their sprint goals.


 Burn Down Chart:

- Definition: A burn down chart is a graphical representation of the work remaining versus time during a sprint.

- Tracking Progress: The burn down chart shows the amount of work remaining (usually in story points or item size) on the vertical axis and the time (usually in days) on the horizontal axis.

- Ideal Progress Line: It also includes an ideal progress line that represents the amount of work that should be completed each day to finish all planned work by the end of the sprint.


 Retrospective:

- Definition: A retrospective is a meeting held at the end of each sprint where the team reflects on their processes and identifies opportunities for improvement.

- Feedback and Reflection: During the retrospective, team members share feedback on what went well during the sprint, what didn't go well, and any ideas for improvement.

- Action Items: The team identifies actionable items to implement in future sprints to address issues and capitalize on successes.

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