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A cumulative flow diagram is a tool used in queuing theory. It is an area graph that depicts the quantity of work in a given state, showing arrivals, time in queue, quantity in queue, and departure. Cumulative flow diagrams are seen in the literature of agile software development and lean product development. They are also seen in transportation. Another term is "cumulative input-output diagram". The term "Newell curve" is also used, in reference to Gordon F. Newell. It is not known if Newell originated the curve.

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  • A cumulative flow diagram is a tool used in queuing theory. It is an area graph that depicts the quantity of work in a given state, showing arrivals, time in queue, quantity in queue, and departure. Cumulative flow diagrams are seen in the literature of agile software development and lean product development. They are also seen in transportation. Some people consider a cumulative flow diagram to be a more sophisticated version of a "burn up chart", which is the opposite of a burn down chart. A burn down chart tracks work remaining over time while burn up charts like the CFD track the growth (or shrinkage) of work in certain states over time. In agile software development, when teams use kanban methodology, the cumulative flow diagram shows the number of active items in each column on a kanban board. The ideal cumulative flow diagram has each line in the cumulative flow diagram trends upwards constantly. With its focus on tracking changes in queue size per state, the CFD has a stronger focus on identifying and rooting out the causes of dramatic changes in throughput. Another term is "cumulative input-output diagram". The term "Newell curve" is also used, in reference to Gordon F. Newell. It is not known if Newell originated the curve. (en)
  • 누적 흐름도(cumulative flow diagram)는 대기행렬이론에 사용되는 도구이다. 주어진 상태, 도착, 대기 시간, 대기의 양, 출발 면에서 작업의 양을 그리는 이다. 누적 흐름도는 애자일 소프트웨어 개발과 (lean product development)의 문헌에서 볼 수 있다. 교통 부문에서도 관찰된다. (ko)
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  • 누적 흐름도(cumulative flow diagram)는 대기행렬이론에 사용되는 도구이다. 주어진 상태, 도착, 대기 시간, 대기의 양, 출발 면에서 작업의 양을 그리는 이다. 누적 흐름도는 애자일 소프트웨어 개발과 (lean product development)의 문헌에서 볼 수 있다. 교통 부문에서도 관찰된다. (ko)
  • A cumulative flow diagram is a tool used in queuing theory. It is an area graph that depicts the quantity of work in a given state, showing arrivals, time in queue, quantity in queue, and departure. Cumulative flow diagrams are seen in the literature of agile software development and lean product development. They are also seen in transportation. Another term is "cumulative input-output diagram". The term "Newell curve" is also used, in reference to Gordon F. Newell. It is not known if Newell originated the curve. (en)
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  • Cumulative flow diagram (en)
  • 누적 흐름도 (ko)
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