The answer is D. Stories describing infrastructure tasks and analysis tasks . Here's why:
Stories describing infrastructure tasks and analysis tasks: A product backlog should include all the work needed to deliver a product, including infrastructure setup, data analysis, and development tasks. Failing to account for these tasks will lead to an inaccurate estimate of the effort required.
Let's look at why the other options are less relevant:
A. The increase in velocity and cost: While velocity and cost are important factors to consider, they are outcomes of the effort, not direct inputs to calculating it.
B. A buffer in the sprint to mitigate unexpected risks: A buffer is a good practice, but it's a way to manage risk, not a primary factor in calculating initial effort.
C. Assigning extra points to each task to allow time for changes: Adding extra points can be helpful, but it's a general approach to account for uncertainty, not a specific consideration for calculating effort.
B is the correct option.
In Agile we must ensure encompassing estimates that account for risk, distractions, and team availability
Absolute estimates are difficult for humans to make, Estimates should be relative and stated in ranges
A = wrong. Cost is not a relevant factor here.
B = correct. Plan extra jobs in order to mitigate unexpected waste.
C = wrong, not logical.
D = Wrong. Why stress only stories that describe the infrastructure tasks and analysis tasks? What about a description of a very, very valuable function for the sponsor?
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