ACP Agile Estimation and Sizing 2

Question 1

T-Shirt sizing (XS, S, M, L, XL) is best suited for which phase of agile estimation?

Accepted Answer

High-level portfolio or roadmap estimation

Answer

T-shirt sizing provides a fast, rough estimate for a large number of items at the portfolio or roadmap level before detailed sprint-level sizing is needed.

Question 2

Which agile estimation technique groups a large number of items on a wall from smallest to largest without using numerical values?

Accepted Answer

Affinity Estimation

Answer

Affinity Estimation has team members silently arrange items from smallest to largest on a wall, then add size labels after groupings emerge, making it fast for large backlogs.

Question 3

A team's last three sprint velocities were 32, 28, and 36 story points. There are 220 story points remaining in the backlog. Approximately how many more sprints are needed to complete the project?

Accepted Answer

7 sprints

Answer

Average velocity = (32+28+36)/3 = 32 points/sprint; 220 ÷ 32 ≈ 6.9, so approximately 7 sprints are needed.

Question 4

What is a key risk of using a team's velocity from a previous project to plan a new project with different team members?

Accepted Answer

Team composition changes affect velocity, making prior data unreliable

Answer

Velocity is team-specific because it reflects the collective capability, practices, and shared understanding of that particular team — a different team will have a different velocity.

Question 5

In agile, what is the purpose of 'Definition of Ready' (DoR) as it relates to estimation?

Accepted Answer

It ensures stories are well-understood enough for the team to estimate confidently

Answer

A Definition of Ready ensures user stories have enough detail, acceptance criteria, and clarity so the team can estimate them accurately during backlog refinement.

ACP - Agile Certified Practitioner Practice Test

ACP - Agile Certified Practitioner Practice Test

ACP Agile Estimation and Sizing 2