Guide on Burn Down Charts

Burn Down Charts are integral to Scrum framework and Professional Scrum Master I (PSM I) exam. The chart is a graphical representation of work left to do versus time. It encapsulates the total effort against the amount of work for each iteration.

Why are Burn Down Charts important?
- They provide visibility into the progress of the project.
- Help teams to self-organize and make necessary adjustments- Facilitate effective communication among the team and stakeholders about the project's progress.

How does a Burn Down Chart work?
It starts with total hours of work to be completed plotted on the Y-axis, and the sprint duration on the X-axis. As work gets completed, the line in the chart 'burns down' towards the X-axis. Any divergence from the ideal line signals that the team is not completing work as expected, enabling them to adjust and course-correct.

Exam Tips: Answering Questions on Burn Down Charts
1. Understand the chart thoroughly – knowing the ideal line and what it signifies is the key.
2. Be able to interpret the burn-down chart – comprehend what it looks like when the team is on track or when they are lagging.
3. Understand the implications of the burn-down chart diverging from the ideal line.
4. In questions where you are asked to select the better option, usually the choice that advocates for transparency, inspection, and adaptation aligns with Scrum Principles.