Burndown Charts

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A Burndown Chart is a graphical representation of work left to do versus time in a Sprint. It is updated daily to provide a view of the team's progress during a Sprint. It helps teams in managing their progress and responding accordingly. The X-axis represents time and the Y-axis represents the amount of work remaining. This visual representation can help the team to identify bottlenecks or issues in the process that might prevent the team from achieving their Sprint Goal.

Guide to Burndown Charts

What is a Burndown Chart?
A Burndown Chart is a graphical representation that shows the work left to do versus time in a project. It is commonly used in agile project management, particularly in Scrum, to track the progress of a Sprint.
Why is it Important?
A Burndown Chart is essential as it helps to visualize the amount of work that has been done and what is still pending. It also provides a clear picture of whether or not the team is on track to complete the tasks within the set timeframe.
How it Works?
On the vertical axis, it shows the amount of work remaining, and on the horizontal axis, it presents the time. As tasks are completed, the line on the chart goes down representing the 'burning down' of tasks.
Answering Questions on Burndown Charts in an Exam
To correctly answer questions related to Burndown Charts in an exam: 1. Understand the basics of what a Burndown Chart is and its role in project management 2. Be able to interpret a Burndown Chart accurately. You should be capable of explaining what a graph shows based on its shape 3. Be familiar with terms like 'Sprint', 'Backlog', and 'Burn Rate' 4. Practice different scenarios and questions. The more you practice, the more comfortable you'll feel.
Exam Tips:
1. Pay close attention to every detail in the chart presented in the question 2. Confirm whether the chart shows work remaining or work completed as this can lead to a completely opposite answer 3. Practice reading and interpreting Burndown Charts before the exam.
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CSM - Burndown Charts Example Questions

Test your knowledge of Burndown Charts

Question 1

The Burndown Chart shows a horizontal line with no movement. As a Scrum Master, which could be the most likely cause of this?

Correct Answer: No tasks are being completed or the status of tasks is not being updated.

A Burndown Chart tracks the completion of work over time in a Scrum project. If the chart shows a horizontal line with no movement, it can indicate that either 'No tasks are being completed' or 'the status of tasks is not being updated'. This is because, under normal progress, the line on the Burndown Chart should be falling as the tasks are completed and remaining work decreases. Other options are not valid because: 'The Sprint backlog is perfectly balanced with the team's velocity' would result in a downward sloping line; 'The team is working on tasks unrelated to the sprint' may result in an upward sloping line if they record it; 'The development team is extraordinarily fast and completed all the tasks at once' would result in a vertical drop but not a horizontal line.

Question 2

Your Burndown Chart shows a flat line for the majority of the sprint, with a steep incline at the end. What does this indicate?

Correct Answer: The team failed to update the chart during the sprint and made updates only towards the end.

A Burndown Chart that shows a flat line for most of the sprint, followed by a steep decline at the end, typically indicates that the team has not been updating the chart regularly. This scenario can happen if the team only updates their progress toward the end of the sprint, making it appear as though there was a sudden completion of tasks. The incorrect answers are plausible scenarios in a sprint but do not directly explain the pattern seen in the described Burndown Chart.

Question 3

You track progress using a Burndown Chart and you notice it starts to rise midway through the sprint. What could this indicate?

Correct Answer: New tasks were added to the sprint

A Burndown Chart reflects the work remaining in a sprint over time. Ideally, the line of the chart should slope down and approach zero remaining tasks towards the end of the sprint. If it starts to rise midway through the sprint, it typically means additional tasks were added to the sprint scope. This matches the answer that 'New tasks were added to the sprint'. The other answers are incorrect because: 'Tasks were removed from the sprint' would cause the chart to drop, not rise. 'The team is not working effectively' might cause the slope of the line to flatten out if tasks are not being completed, but not necessarily rise unless new tasks are being added. Lastly, the idea that 'The chart is broken' is an unlikely first conclusion to draw from seeing the chart rise; while it is technically possible, usually issues with work progress are reflected in the work itself, not the tracking tool.

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