Sprint Burn-down and Sprint Burn-up
Sprint burn-down and Sprint burn-up charts are used by development teams to capture the progress on work with respect to the sprint goal. It helps team in understanding where they stand today and how much they have to achieve to meet the goal.
One can use either sprint burn-down or sprint burn-up as per the team’s choice. Both graphs are good information radiators which help team to inspect the progress towards the sprint goal and adapt the changes required to achieve the goal.
In Sprint burn-down, we see how much work is left out at a given moment. In the above graph, Y –axis represents the Sprint scope and X-axis represents number of days. The team committed to complete 76 story points in 15 working days sprint.
The blue line indicates the ideal scenario the way stories should be completed in a sprint. The red line indicates the actuals where on 6th day, remaining scope is 57 story points and it also indicates that we are behind the schedule and if we go by the same rate, we will not be able to achieve our sprint goal.
Let’s take one more scenario. The green line in the above graph indicates that at 4th day of the sprint, remaining scope is 55 story points and it also indicates that we are ahead of schedule and if we go by the same rate, we will be able to achieve our goal well before time. Let me explain by an analogy, In Cricket, if we are chasing the target means we are batting second.
Where batsman should be focussed on ?
How much he/she has scored? OR How much is left to be scored?
At that moment, batsman doesn’t focus on how much/she has scored but they focus on how much is left over to win the match. Similar approach goes with sprint burndown chart where one focuses on how much is left over to achieve sprint goal.
Now, when it comes to burn-up chart, focus is on how much work is complete. Like, in the below graph red line depicts that 19 story points have been achieved by 6th day of the sprint. If we go by this rate, we will not be able to meet our sprint goal.
Whereas, in the below graph, green line illustrates that if we go by the same pace, we will be able to achieve our goal well before time.
The same analogy applies for burnup chart as well. If we are batting first, our focus will be on how much batsman have scored so far and also predict how much can be scored in remaining overs.
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Reference: Knowledge gained during CSM Workshop by Leanpitch