A simple interactive example of a progress report based on the Earned Value method (part 2)

Another example of a responsive output graph linked to the previous post (input form) is the  cost and schedule performance index.
  • CPI (Cost Performance Index): greater than 1 means under budget; less than 1 means over budget.
  • SPI (Schedule Performance Index): greater than 1 means ahead schedule; less than 1 means behind schedule.
In general, ideally, performance index greater than 1 means good and less than 1 means bad. But, each single case must be analyzed to get a better understanding of the situation at a given point in the project timeline, because greater than 1 might not necessarily mean good.

In this example, there is no relationship between the predecessor and successor instance within the graph, hence, each case is to be treated as a singular case. But, in a real project network diagram where all relationships between tasks have been set to place, snapshots of various patterns can be created. This will give the opportunity to recognize, at a glance, each single case, i.e., the state of the project's situation at a given point (within that part of the project timeline that has been achieved).

(Please read the "N.B." in the Input Data Form of the previous post "A simple interactive example of a progress report based on the Earned Value method (part 1)".


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