Agile Metrics and Reporting Questions and Answers — Questions and Answers
Question 1: A team is reviewing their Cumulative Flow Diagram (CFD). They notice that the band representing the 'In Progress' stage is consistently widening over time, while the 'Done' band is flattening. What is the most likely interpretation of this pattern?
- The team's Work in Progress (WIP) limits are too low, starving the team of work.
- The project scope is decreasing as features are being completed and removed.
- A bottleneck exists where work is entering the 'In Progress' stage faster than it is leaving. (Correct answer)
- The team is becoming more efficient and finishing work faster than new work is starting.
Correct answer: A bottleneck exists where work is entering the 'In Progress' stage faster than it is leaving.
A widening band in a CFD for a particular stage indicates that the rate of items entering that stage is greater than the rate of items leaving it. This is a classic sign of a bottleneck, where work is piling up. A flattening 'Done' band further confirms that the rate of completion has slowed or stopped.
Question 2: An Agile team wants to measure the total time from when a customer request is first made until it is delivered to the customer to better understand the customer's experience. Which metric should they use?
- Velocity
- Lead Time (Correct answer)
- Cycle Time
- Throughput
Correct answer: Lead Time
Lead Time measures the total elapsed time from the moment a work item is requested until it is delivered to the customer. Cycle Time is a subset of this, measuring only the time from when work actively begins on an item until it is completed. Velocity measures output per iteration, and Throughput measures the number of items completed per time unit.
Question 3: A team is using a burn-up chart to track progress towards a release. Midway through the project, the product owner adds a significant number of new user stories to the scope. How would this event be reflected on the burn-up chart?
- The line representing total scope would show a distinct upward step. (Correct answer)
- The line representing completed work would drop down to a lower value.
- Both the completed work line and the total scope line would flatten.
- A new chart must be started as the original scope is now invalid.
Correct answer: The line representing total scope would show a distinct upward step.
A burn-up chart tracks two key lines: the total scope of work and the amount of work completed. When new scope is added, the line representing the total work will jump up, reflecting the new total. The line for completed work continues to climb from its previous point as the team completes tasks.
Question 4: A manager who oversees several Scrum teams wants to use velocity as the primary metric to compare their performance. Which of the following is the most significant reason this is a flawed approach?
- Velocity does not account for the quality of the work delivered by each team.
- Teams may artificially inflate their velocity if they know they are being compared.
- Velocity can only be measured accurately using story points, which are subjective.
- Comparing velocities is misleading because each team's estimation scale is unique and relative to that team. (Correct answer)
Correct answer: Comparing velocities is misleading because each team's estimation scale is unique and relative to that team.
Velocity is a measure of a team's capacity based on its own relative estimation scale (e.g., story points). Because each team develops its own understanding of what a 'story point' represents, their scales are not comparable. Comparing the velocity of two teams is like comparing apples to oranges and provides no meaningful insight into performance.
Question 5: A Kanban team wants to improve the predictability of their delivery. They decide to track the number of work items finished per week to understand their delivery rate. What is this metric called?
- Work in Progress (WIP)
- Velocity
- Throughput (Correct answer)
- Cycle Time
Correct answer: Throughput
Throughput is a key flow metric that measures the number of work items completed within a specific time period (e.g., per day or per week). It provides a direct measure of the team's delivery rate and is often used for forecasting.
Question 6: You are an Agile leader preparing a status report for stakeholders who are primarily concerned with budget and schedule forecasting for a major release. Which combination of metrics would be most effective for this audience?
- Team Velocity and a Sprint Burndown Chart
- A Release Burn-up Chart and Cumulative Flow Diagram (CFD) (Correct answer)
- Daily Throughput and a Team Happiness Survey
- Escaped Defect Count and Cycle Time
Correct answer: A Release Burn-up Chart and Cumulative Flow Diagram (CFD)
A Release Burn-up chart is excellent for stakeholders as it clearly visualizes progress against the total scope and can be used to forecast a completion date. A Cumulative Flow Diagram provides a higher-level view of the stability of the workflow, showing bottlenecks and the average lead/cycle times, which are crucial for schedule forecasting. This combination directly addresses schedule and progress against the entire scope.
Agile Metrics and Reporting Questions and Answers
A team is reviewing their Cumulative Flow Diagram (CFD).
They notice that the band representing the 'In Progress' stage is consistently widening over time, while the 'Done' band is flattening.
What is the most likely interpretation of this pattern?