ACP Agile Estimation and Sizing

Question 1

Which estimation technique uses a modified Fibonacci sequence (1, 2, 3, 5, 8, 13, 20...) to size user stories?

Accepted Answer

Planning Poker

Answer

Planning Poker uses a modified Fibonacci sequence on cards so that larger numbers reflect greater uncertainty in large estimates.

Question 2

In agile estimation, what does a 'story point' primarily represent?

Accepted Answer

Relative effort, complexity, and uncertainty

Answer

Story points are a relative measure of effort, complexity, and risk rather than an absolute time unit, allowing teams to estimate without time-boxing individuals.

Question 3

What is the primary benefit of using relative estimation over time-based estimation in agile?

Accepted Answer

It reduces anchoring bias and leverages team consensus

Answer

Relative estimation reduces individual anchoring bias because team members compare stories to each other rather than estimating in hours, and consensus is reached collaboratively.

Question 4

A team uses a 'reference story' when doing story point estimation. What is the purpose of the reference story?

Accepted Answer

To serve as a calibration baseline for sizing other stories

Answer

A reference story is a previously completed story the team agrees represents a known size, used as an anchor to calibrate estimates for new stories.

Question 5

Which of the following best describes 'velocity' in an agile context?

Accepted Answer

The average story points completed per iteration

Answer

Velocity is the average number of story points a team completes per sprint, calculated over several sprints to enable reliable release forecasting.

ACP - Agile Certified Practitioner Practice Test

ACP - Agile Certified Practitioner Practice Test

ACP Agile Estimation and Sizing