Cumulative Flow Diagram (CFD) Guide
Cumulative Flow Diagram (CFD) is a crucial tool in Scrum performance metrics.
Why it's important: CFD provides a visual tracking of project progress, making it easier to understand the work done, in progress, and remaining. It facilitates better decision making by offering a visual representation of bottlenecks and inefficiencies in workflow.
What it is: CFD is a graphical representation of the workflow of distinct statuses (i.e., To Do, In Progress, Done) divided over time. The X-axis represents time, and the Y-axis represents tasks. Its layout displays the accumulation of tasks at every point in the workflow.
How it works: Tasks join the 'ToDo' section at the bottom of the graph and progress to the 'In Progress' and 'Done' sections as they are completed. The slope between phases shows the rate of progress. A steep slope indicates fast progress, while a flat slope indicates slow progress.
Exam Tips - Answering Questions on CFD:
1. Understand the basic concepts of CFD thoroughly - the vertical axis (tasks), the horizontal axis (time), and the different sections of tasks.
2. Be able to identify trends (like bottlenecks) based on the graphical representation.
3. Be proficient in differentiating between healthy and problematic CFDs. A widening gap between In Progress and Done may indicate a problem.
4. Learn how to interpret the data for decision making. For example, reducing Work in Progress (WIP) if the amount of work in progress is too high, leading to bottlenecks.
Note: Use the CFD analysis to draw conclusions about the efficiency of the process and effectiveness of changes made.