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Effective estimation is essential in Agile project management to plan work accurately and set realistic expectations. Two popular techniques are Planning Poker and Relative Sizing, which help teams estimate effort and complexity collaboratively.
Planning Poker
Planning Poker involves team members using numbered cards to estimate the effort required for user stories. Each participant selects a card secretly, then reveals their estimate simultaneously. This process encourages discussion and helps identify differing perspectives.
The main advantage of Planning Poker is its ability to promote team consensus and uncover assumptions. It is especially useful for breaking down complex tasks into manageable components and avoiding anchoring bias.
Relative Sizing
Relative Sizing compares new tasks to previously estimated stories, assigning sizes like Small, Medium, or Large. This method simplifies estimation by focusing on relative effort rather than absolute hours.
Teams often use story points or t-shirt sizes to categorize work. Relative Sizing helps maintain consistency across estimates and speeds up the planning process, especially when dealing with numerous or complex stories.
Benefits of These Techniques
- Encourages team collaboration
- Reduces estimation bias
- Speeds up planning sessions
- Provides a shared understanding of effort