Final answer:
The unit-less measure used in relative user story estimation techniques is called a Story Point (A). It's utilized in agile frameworks to estimate the complexity or effort of user stories. Story points are preferred in agile environments for their relative and flexible nature over traditional time-based estimates.
Step-by-step explanation:
The term for a unit-less measure used in relative user story estimation techniques is Story Point. This measure is employed within agile project management, and specifically in frameworks like Scrum and Kanban, to estimate the effort, complexity, or time required to complete a user story. Unlike hours or days, which are absolute measures, story points are relative and abstract, making them particularly useful in agile contexts where flexibility and adaptation are valued over precise time tracking.
User story estimation is crucial in planning iterations or sprints, as it helps teams understand the workload and prioritize tasks. Agile teams often use planning poker or similar consensus-based estimation techniques to assign story points to user stories, and these points are then used to guide the development process and track Velocity, which indicates how much work a team can handle in a specific time frame.
Now, let's answer the second part of the question. Here's a quick guide matching descriptions with their respective terms:
.a. The shortest path from start to finish - Geodesic
b. A physical quantity with magnitude and direction - Vector
c. The quantity defined as a change in velocity over a time period - Acceleration
d. The point from where you take measurements - Reference Point