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InterviewSolution
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Why do we estimate in Story points and why we use Fibonacci series? |
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Answer» Story points are a relative measure of the size of a user story. A user story estimated as ten story points is twice as big, complex or risky as a story estimated as five story points. A ten-story point is similarly half as big, complex or risky as a twenty-story point story. What matters are relative values assigned to different stories. Velocity is also calculated by SUMMING the story point estimates for each completed story. Story points are purely an estimate of the size of the work to be performed. The duration of the project is not estimated as much as it is delivered by taking the total number of story points and DIVIDING it by the velocity of the team. The most common way of estimating a User Story is by using Fibonacci series as it forces them to provide a relative estimate. It is easier for ANYONE to answer “Is that 5 or 8” RATHER than 6 or 7? |
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