A team is estimating story points. They estimate that the story falls between a large (13) and a medium (5) and they assign a story point of 8. What is this technique called?

Question

Options

• AAffinity estimation
• BFibonacci estimation
• CTriangulation

• B
  4% (1)
• C
  96% (22)

Explanation

Triangulation is correct because the team used two known reference points - a large (13) and a medium (5) - to anchor the estimate, then placed the new story between them at 8. The defining characteristic of triangulation is comparing an unknown to two knowns to arrive at a relative estimate.

Affinity estimation (A) is wrong because that technique involves silently grouping stories by perceived size and then discussing outliers - it's a sorting/grouping method, not a between-two-points comparison.

Fibonacci estimation (B) is a distractor because 5, 8, and 13 are Fibonacci numbers, making this choice tempting. However, Fibonacci estimation refers to the scale used for story points, not the method of arriving at a value - the team could use Fibonacci numbers in many estimation techniques.

Memory tip: Think of triangulation like geometry - a triangle needs three points. Here, the two known stories (5 and 13) form the base, and the new story (8) becomes the third point placed between them.

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