cumulative flow diagram

A time-based chart that cumulatively displays how many features are done, how many are in each in-progress state, and how many remain in the backlog.

Key Points

  • Shows cumulative item counts per workflow state (Backlog, In Progress stages, Done) across time.
  • The vertical thickness between colored bands represents WIP; widening bands signal bottlenecks.
  • The slope of the Done band reflects throughput; steady, parallel bands suggest stable flow.
  • Supports forecasting completion, monitoring queues, and guiding WIP limit and process adjustments.

Example

A Kanban team tracks features weekly. Their cumulative flow diagram shows the Testing band growing faster than others while the Done band flattens. The team adds a tester and limits items entering Testing; over the next two weeks the Testing band narrows and the Done band steepens, restoring predictable flow.

PMP Example Question

Which artifact best visualizes completed features over time along with items in each intermediate state and in the backlog to identify bottlenecks?

  1. Sprint burndown chart
  2. Cumulative flow diagram
  3. Gantt chart
  4. Velocity chart

Correct Answer: B — cumulative flow diagram

Explanation: A cumulative flow diagram plots cumulative counts by state (Backlog, in-progress stages, Done) over time, revealing WIP, bottlenecks, and throughput. The other options do not show all states simultaneously.

How To Land the Job and Interview for Project Managers Course

Take the next big step in your project management career with HK School of Management. Whether you're breaking into the field or aiming for your dream job, this course gives you the tools to stand out, impress in interviews, and secure the role you deserve.

This isn’t just another job-hunting guide—it’s a tailored roadmap for project managers. You’ll craft winning resumes, tackle tough interview questions, and plan your first 90 days with confidence. Our hands-on approach includes real-world examples, AI-powered resume hacks, and interactive exercises to sharpen your skills.

You'll navigate the hiring process like a pro, with expert insights on personal branding, salary negotiation, and career growth strategies. Plus, downloadable templates and step-by-step guidance ensure you're always prepared.

Learn from seasoned professionals and join a community of ambitious project managers. Ready to land your ideal job and thrive in your career? Enroll now and take control of your future!



Lead with clarity, influence, and outcomes.

HK School of Management brings you a practical, no-fluff Leadership for Project Managers course—built for real projects, tight deadlines, and cross-functional teams. Learn to set direction, align stakeholders, and drive commitment without relying on title. For the price of a lunch, get proven playbooks, and downloadable templates. Backed by a 30-day money-back guarantee—zero risk, high impact.

Learn More